The Following List Contains the Material Safety Data Sheets You Requested

The following list contains the Material Safety Data Sheets you requested. Please scoll down to view the requested MSDS(s).

Product MSDS Distributor Format Language Quantity

2495900 220999 Hach Company ROWGHS English 1 2495900 1232120 Hach Company ROWGHS English 1 2495900 1403599 Hach Company ROWGHS English 1 2495900 1432298 Hach Company ROWGHS English 1 2495900 1432399 Hach Company ROWGHS English 1 2495900 2227066 Hach Company ROWGHS English 1 2495900 2266349 Hach C ompany ROWGHS English 1 2495900 2268732 Hach Company ROWGHS English 1 2495900 2415132 Hach Company ROWGHS English 1 ______Total Enclosures: 9 World Headquarters Hach Company P.O.Box 389 MSDS No: M00038 Loveland, CO USA 80539 (970) 669 -3050 SAFETY DATA SHEET

______1. CHEMICAL PRODUCT AND COMP ANY IDENTIFICATION

Product Name: PhosVer ® 3 Phosphate Reagent Catalog Number: 220999

Hach Company Emergency Telephone Numbers: P.O.Box 389 (Medical and Transportation) Loveland, CO USA 80539 (303) 623 -5716 24 Hour Service (970) 669 -3050 (515)232 -2533 8am - 4pm CST

MSDS Number: M00038 Chemical Name: Not applicable CAS Number: Not applicable Additional CAS No. (for hydrated forms): Not applicable Chemical Formula: Not applicable Chemical Family: Mixture Intended Use: Laboratory Reagent Phos phate determination ______2. HAZARDS IDENTIFICATION

GHS Classification: Hazard categories: . Serious Eye Damage/Eye Irritation:Eye Irrit. 2 GHS Label Elements: WARNING

Hazard statements: . Causes serious eye irritation. Precautionary statements: . Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical advice/attention. HMIS: Health: 3 Flammability: 1 Reactivity: 0 Protective Equipment: X - See protective equipment, Section 8. NFPA: Health: 3 Flammability: 1 Reactivity: 0 Symbo l: Not applicable WHMIS Hazard Classification: Class D, Division 2, Subdivision B - Toxic material (other toxic effects) WHMIS Symbols: Other Toxic Effects ______3. COMPOSITI ON / INFORMATION ON INGREDIENTS

Hazardous Components according to GHS: Potassium Pyrosulfate CAS Number: 7790 -62 -7 Chemical Formula: K2S2O7 GHS Classification: Acute Tox. 5 -Orl, H303; Eye Irrit. 2A, H319; Percent Range (Trade Secret): 70.0 - 80.0 Percent Range Units: weight / weight PEL: 15 mg/m 3 as inhalable dust; 5 mg/m 3 as respirable dust TLV: 10 mg/m 3 as inhalable dust; 3 mg/m 3 as respirable dust

WHMIS Symbols: Other Toxic Effects Sodium Molybdate

CAS Number: 7631 -95 -0 Chem ical Formula: Na 2MoO 4 · 2H 2O GHS Classification: Acute Tox. Inh. 4, H332; Acute Tox. Orl. 4, H302; Eye Irrit. 2, H319; Acute Tox. 5 -Derm., H313 Percent Range (Trade Secret): 1-3 Percent Range Units: weight / weight PEL: 5 mg/m³ (as Mo) TLV: 5 mg/m³ ( as Mo)

WHMIS Symbols: Acute PoisonOther Toxic Effects Potassium Antimonyl Tartrate

CAS Number: 11071 -15 -1 . Chemical Formula: C8H4K2O12 Sb 2 3H 2O GHS Classification: Acute Tox. 3 -Orl, H301; Muta 2, H341; Carc. 2, H351; STOT SE 1, H370; STOT RE 1, H37 2; Aq. Chron. 3, H412 Percent Range (Trade Secret): < 0.5 Percent Range Units: weight / weight PEL: 0.5 mg/m³ (as Sb) TLV: 0.5 mg/m³ (as Sb)

WHMIS Symbols: Acute Poison EDTA Tetrasodium Salt

CAS Number: 64 -02 -8 Chemical Formula: C10 H12 N2Na 4O8 2H 2O GHS Classification: Acute Tox. 4 -Orl, H302; Eye Dam. 1, H318 Percent Range (Trade Secret): < 0.5 Percent Range Units: weight / weight PEL: 15 mg/m 3 as total dust; 5 mg/m 3 as respirable dust TLV: 10 mg/m 3 as inhalable dust; 3 mg/m 3 as respirable dus t

WHMIS Symbols: Other Toxic Effects Hazardous Components according to GHS: No Ascorbic Acid

CAS Number: 50 -81 -7 Chemical Formula: C6H8O6 GHS Classification: Not applicable Percent Range (Trade Secret): 15.0 - 25.0 Percent Range Units: weight / weight PEL: 15 mg/m 3 as total dust; 5 mg/m 3 as respirable dust TLV: 10 mg/m 3 as inhalable dust; 3 mg/m 3 as respirable dust

WHMIS Symbols: Not applicable ______4. FIRST AID MEASU RES

General Information: In the event of exposure, show this Material Safety Data Sheet and label (where possible) to a doctor. Advice to doctor: Treat symptomatically. Eye Contact: Immediately flush eyes with water for 15 minutes. Call physician. Skin Contact (First Aid): Wash skin with plenty of water. Inhalation: Remove to fresh air. Give artificial respiration if necessary. Call physician. Ingestion (First Aid): D o not induce vomiting. Give 1 -2 glasses of water. Call physician immediately. Never give anything by mouth to an unconscious person. ______5. FIRE FIGHTING MEASURES

Flammable Pr operties: Material is not classified as flammable according to GHS criteria. Can burn in fire, releasing toxic vapors. Fire Fighting Instruction: As in any fire, wear self -contained breathing apparatus pressure -demand and full protective gear. Ext inguishing Media: Use media appropriate to surrounding fire conditions Extinguishing Media NOT To Be Used: Not applicable Fire / Explosion Hazards: None reported Hazardous Combustion Products: Toxic fumes of: sulfur oxides. carbon monoxide, carbon dioxide. sodium monoxide potassium oxides nitrogen oxides. ______6. ACCIDENTAL RELEASE MEASURES

Handling: Avoid contact with eyes clothing Do not breathe dust. Wash thoroughly after handling. Maintain general industrial hygiene practices when using this product. Storage: Store between 10° and 25°C. Flammability Class: Not applicable ______8. EXPOSURE CONTROLS / PERSONAL PROTECTION

Engineering Controls: Maintain general industrial hygiene practices when using this product. Personal Protective Equipment: Eye Protection: safety glasses with top and side shields Skin Protection: nitrile gloves In the EU, the selected gloves must satisfy the specifications of EU Directive 89/686/EEC and standard EN 374 derived from it. lab coat Inhalati on Protection: adequate ventilation Precautionary Measures: Avoid contact with: eyes Do not breathe: dust Wash thoroughly after handling. Protect from: heat TLV: 10 mg/m 3 as inhalable dust PEL: 15 mg/m 3 as inhalable dust; 5 mg/m 3 as respira ble dust For Occupational Exposure Limits (OEL) for ingredients, see section 3 - Composition/Information on Ingredients.: ______9. PHYSICAL AND CHEMICAL PROPERTIES

Appearance: W hite to off -white powder Physical State: Solid Molecular Weight: Not applicable Odor: Odorless Odor Threshold: Not applicable pH: 1.1 (5% solution) Metal Corrosivity: Corrosivity Classification: Not classified as corrosive to metals accordin g to GHS criteria. Steel: Not Applicable Aluminum: Not Applicable Specific Gravity/ Relative Density (water = 1; air =1): 2.17 Viscosity: Not applicable Solubility: Water: Soluble Acid: Soluble Other: Not determined Partition Coefficient (n -octanol / water): Not applicable Coefficient of Water / Oil: Not applicable Melting Point: 190 °C (374 °F) Decomposition Temperature: Not determined Boiling Point: Not applicable Vapor Pressure: Not applicable Vapor De nsity (air = 1): Not applicable Evaporation Rate (water = 1): Not applicable Volatile Organic Compounds Content: Not applicable Flammable Properties: Material is not classified as flammable according to GHS criteria. Can burn in fire, releasing to xic vapors. Flash Point: Not applicable Method: Not applicable Flammability Limits: Lower Explosion Limits: Not applicable Upper Explosion Limits: Not applicable Autoignition Temperature: Not determined Explosive Properties: Not classified according to GHS criteria. Oxidizing Properties: Not classified according to GHS criteria. Reactivity Properties: Not classifed as self -reactive, pyrophoric, self -heating or emitting flammable gases in contact with water according to GHS crite ria. Gas under Pressure: Not classified according to GHS criteria. ______10. STABILITY AND REACTIVITY

Chemical Stability: Stable when stored under proper conditions. Mechanical Impact: None reported Static Discharge: None reported. Reactivity / Incompatibility: Incompatible with: oxidizers dyes alkalies iron copper Hazardous Decomposition: Heating to decomposition releases: carbon dioxide carbon monoxi de sulfur oxides nitrogen oxides potassium oxide sodium oxides Conditions to Avoid: Extreme temperatures ______11. TOXICOLOGICAL INFORMATION

Toxicokinetics, Metabolism and Distribution: No information available for mixture. Toxicologically Synergistic Products: None reported Acute Toxicity: Acute Toxicity Estimate (ATE) - Calculated from Ingredient Toxicity Data Route Data Given Below Based on classification prin ciples, the classification criteria are not met. Oral Rat LD50 = 2350 mg/kg Inhalation Rat LC50 = 90.5 mg/L Specific Target Organ Toxicity - Single Exposure (STOT -SE): Based on classification principles, the classification criteria are not met. Specific Target Organ Toxicity - Repeat Exposure (STOT -RE): Based on classification principles, the classification criteria are not met. Skin Corrosion/Irritation: Based on classification principles, the classification criteria are not met. Eye Da mage: Irritating to eyes. Sensitization: Based on classification principles, the classification criteria are not met. CMR Effects/Properties (carcinogenic, mutagenic or toxic to reproduction): Based on classification principles, the classificati on criteria are not met. This product does NOT contain any IARC listed chemicals. This product does NOT contain any NTP listed chemicals. This product does NOT contain any OSHA listed carcinogens. Symptoms/Effects: Ingestion: May be harmful if swallowed May cause: copper deficiency anemia gout loss of coordination loss of appetite listlessness diarrhea liver damage May effect enzyme activity. Inhalation: May cause: Effects similar to those of ingestion. Skin Absorption: None Reported Chronic Effects: Chronic overexposure may cause copper deficiency enzyme activity effects liver damage Molybdenum poisoning signs include loss of appetite, listlessness and reduced growth rate. Excessive exposure to mol ybdenum compounds may cause gout and anemia. Medical Conditions Aggravated: Pre -existing: Eye conditions Respiratory conditions Gout ______12. ECOLOGICAL INFORMATION

Product Ecological Information: -- No ecological data available for this product. Based on classification principles, not classified as hazardous to the environment. Method Used for Estimation of Aquatic Toxicity of Mixture Summation Method M -factor (Multiplier) for highly toxic ingredients: 1 Ingredient Ecological Information: Potassium antimonyl tartrate: 96 hr Fish LC50 = 12.5 mg/L; 48 hr Daphnia magna EC50 = 5 mg/L CEPA Statement: Potassium Pyrosulfate and Sodium Molybdate: Persistent, not bioaccumulative or inherently toxic to aquatic organisms; Ascorbic Acid: Not persistent, not bioaccumulative or inherently toxic to aquatic organisms. ______13. DISPOSAL CONSIDERATIONS

EPA Waste ID Number: Not applicable Special Instructions (Disposal): Work in an approved fume hood. Dilute material with excess water making a weaker than 5% solution. Adjust to a pH between 6 and 9 with an alkali, such as soda ash or sodium bicarbonate. If permitted by regulation, Open cold water tap completely, slowly pour the reacted material to the drain. Allow cold water to run for 5 minutes to complet ely flush the system. Otherwise, Check with national, local municipal and state authorities and waste contractors for pertinent local information on the disposal of this article. Empty Containers: Rinse three times with an appropriate solvent. Colle ct rinsate and dispose of according to local, state or federal regulations. In the US, rinsate from empty containers is classified as hazardous waste and should be disposed of at an E.P. A. approved facility. Rinsate from empty containers may contain suf ficient product to require disposal as hazardous waste. Dispose of empty container as normal trash. NOTICE (Disposal): These disposal guidelines are based on federal regulations and may be superseded by more stringent state or local requirements. Ple ase consult your local environmental regulators for more information. In Europe: Chemical and analysis solutions must be disposed of in compliance with the respective national regulations. Product packaging must be disposed of in compliance with the cou ntry -specific regulations or must be passed to a packaging return system. ______14. TRANSPORT INFORMATION

D.O.T.: D.O.T. Proper Shipping Name: Not Currently Regulated -- Ha zard Class: NA Subsidiary Risk: NA ID Number: NA Packing Group: NA T.D.G.: Proper Shipping Name: Not Currently Regulated -- Hazard Class: NA Subsidiary Risk: NA UN Number/PIN: NA Packing Group: NA I.C.A.O.: I.C.A.O. Proper Shipping Name: Not Currently Regulated -- Hazard Class: NA Subsidiary Risk: NA ID Number: NA Packing Group: NA I.M.O.: Proper Shipping Name: Not Currently Regulated -- Hazard Class: NA Subsidiary Risk: N A ID Number: NA Packing Group: NA Additional Information: There is a possibility that this product could be contained in a reagent set or kit composed of various compatible dangerous goods. If the item is NOT in a set or kit, the classification given above applies. If the item IS part of a set or kit, the classification would change to the following: UN3316 Chemical Kit, Class 9, PG II or III. If the item is not regulated, the Chemical Kit classification does not apply. ______15. REGULATORY INFORMATION

U.S. Federal Regulations: O.S.H.A.: This product meets the criteria for a hazardous substance as defined in the Hazard Communication Standard. (29 CFR 1910.1200) E.P.A.: S.A.R.A. Title III Section 311/312 Categorization (40 CFR 370): Immediate (Acute) Health Hazard Delayed (Chronic) Health Hazard S.A.R.A. Title III Section 313 (40 CFR 372): This product does NOT contain any chemical subject to the reporting requirements of Section 313 of Title III of SARA. -- 302 (EHS) TPQ (40 CFR 355): Not applicable 304 CERCLA RQ (40 CFR 302.4): Not applicable 304 EHS RQ (40 CFR 355): Not applicable Clean Water Act (40 CFR 116.4): Not applicable RCRA: Contains no RCRA regulated substances. State Regulations: California Prop. 65: No Prop. 65 listed chemicals are present in this product. Identification of Prop. 65 Ingredient(s): Not applicable California Perchlorate Rule CCR Title 22 Chap 33: Not applicable Trade Secret Registry: Not applicable National Inventories: U.S. Inventory Status: All ingredients in this product are listed on the TSCA 8(b) Inventory (40 CFR 710). CAS Number: Not applicable Canadian Inventory Status: All ingre dients of this product are DSL Listed. EEC Inventory Status: All ingredients used to make this product are listed on EINECS / ELINCS. Australian Inventory (AICS) Status: All ingredients are listed. New Zealand Inventory (NZIoC) Status: All compo nents either listed or exempt. Korean Inventory (KECI) Status: All components of this product are either listed, listed as the anhydrous compound or exempt. Japan (ENCS) Inventory Status: All components either listed or exempt. China (PRC) Inventory (MEP) Status: All components either listed or exempt. ______16. OTHER INFORMATION

References: TLV's Threshold Limit Values and Biological Exposure Indices for 1992 -1993. American Conference of Governmental Industrial Hygienists, 1992. Air Contaminants, Federal Register, Vol. 54, No. 12. Thursday, January 19, 1989. pp. 2332 -2983. In -house information. Technical Judgment. Outside Testing. NIOSH/OSHA Oc cupational Health Guidelines for Chemical Hazards. Cincinnati: Department of Health and Human Services, 1981. Sax, N. Irving. Dangerous Properties of Industrial Materials, 7th Ed. New York: Van Nostrand Reinhold Co., 1989. Gosselin, R. E. et al. Cl inical Toxicology of Commercial Products, 5th Ed. Baltimore: The Williams and Wilkins Co., 1984. Vendor Information. Patty, Frank A. Industrial Hygiene and Toxicology, 3rd Revised Edition. Volume 2. New York: A Wiley - Interscience Publication, 1981. Complete Text of H phrases referred to in Section 3: H302 Harmful if swallowed. H318 Causes serious eye damage. H319 Causes serious eye irritation. H332 Harmful if inhaled. H411 Toxic to aquatic life with long lasting effects. Revision Summary: . Substantial revision to comply with EU Reg 1272/2008, Reg 1907/2006 and UN GHS ( ST/SG/AC.10/36/Add.3). Date of MSDS Preparation: Day: 27 Month: June Year: 2014 MSDS Prepared: MSDS prepared by Product Compliance Department extension 3350 CC OHS Evaluation Note: It is offered under exemption from WHMIS labeling as specified in the Controlled Products Regulation (CPR) Section 17. It is offered under the interim policy that was established by Health Canada permitting use of GHS -formatted saf ety data sheets in Canada prior to revision of CPR to GHS. This product has been classified and labeled in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). This SDS has been prepared in accordance with the requirements of GHS (ST/SG/AC.10/ 36/Add.3). ______

Legend: NA - Not Applicable w/w - weight/weight ND - Not Determined w/v - weight/volume NV - Not Available v/v - volume/volume

USER RESPONSIBILITY: Each user shou ld read and understand this information and incorporate it in individual site safety programs in accordance with applicable hazard communication standards and regulations.

THE INFORMATION CONTAINED HEREIN IS BASED ON DATA CONSIDERED TO BE ACCURATE. HOWEVE R, NO WARRANTY IS EXPRESSED OR IMPLIED REGARDING THE ACCURACY OF THESE DATA OR THE RESULTS TO BE OBTAINED FROM THE USE THEREOF.

______1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

Product Name: Calcium Sulfate Catalog Number: 1232120

Hach Company Emergency Telephone Numbers: P.O.Bo x 389 (Medical and Transportation) Loveland, CO USA 80539 (303) 623 -5716 24 Hour Service (970) 669 -3050 (515)232 -2533 8am - 4pm CST

MSDS Number: M00928 Chemical Name: Sulfuric acid, calcium salt CAS Number: 7778 -18 -9 Additional CAS No. (for hydrated f orms): - 13397 -24 -5 (Monohydrate); 10101 -41 -4 (Dihydrate); 10034 -76 -1 (Hemihydrate) Chemical Formula: CaSO 4 · 2H 2O Chemical Family: Inorganic Salt Intended Use: Laboratory Reagent ______2. HAZARDS IDENTIFICATION

This substance is not classified as hazardous per GHS (UN publication ST/SG/AC.10/36/Add.3) GHS Classification: Hazard categories: Not applicable GHS Label Elements: Not applicable

Hazard statements: Not applicable Precautionary statements: Not applicable HMIS: Health: 0 Flammability: 0 Reactivity: 0 Protective Equipment: X - See protective equipment, Section 8. NF PA: Health: 0 Flammability: 0 Reactivity: 0 Symbol: Not applicable WHMIS Hazard Classification: Not applicable WHMIS Symbols: Not applicable ______3. COMPOSITION / INFORMA TION ON INGREDIENTS

Hazardous Components according to GHS: No Calcium Sulfate

CAS Number: 7778 -18 -9 Chemical Formula: CaSO 4 · 2H 2O GHS Classification: Not hazardous Percent Range (Trade Secret): 100.0 Percent Range Units: weight / weight PEL: 15 mg/m³ (total dust); 5 mg/m³ (respirable dust) TLV: 10 mg/m³ (total dust); 3 mg/m³ (respirable dust)

WHMIS Symbols: Not applicable ______4. FIRST AID MEASURES

General Informati on: In the event of exposure, show this Material Safety Data Sheet and label (where possible) to a doctor. Advice to doctor: Treat symptomatically. Eye Contact: Flush eyes with water. Call physician if irritation develops. Skin Contact (First Aid): Wash skin with plenty of water. Inhalation: Remove to fresh air. Ingestion (First Aid): Give large quantities of water. Call physician immediately. ______5. FIRE FIGHTING MEASUR ES

Flammable Properties: Material is not classified as flammable according to GHS criteria. Material will not burn. Fire Fighting Instruction: As in any fire, wear self -contained breathing apparatus pressure -demand and full protective gear. Evacuate area and fight fire from a safe distance. Extinguishing Media: Use media appropriate to surrounding fire conditions Extinguishing Media NOT To Be Used: Not applicable Fire / Explosion Hazards: May explode on contact with: aluminum / aluminum compounds May react violently with: reducers heat Hazardous Combustion Products: None reported ______6. ACCIDENTAL RELEASE MEAS URES

Handling: Avoid contact with eyes Wash thoroughly after handling. Use with adequate ventilation. Do not breathe dust. Maintain general industrial hygiene practices when using this product. Storage: Keep container tightly closed when not in use. Store in a cool, dry, well -ventilated place. Protect from: heat extreme temperatures Keep away from: reducers metals Flammability Class: Not applicable ______8. EXPOSURE CONTROLS / PERSONAL PROTECTION

Engineering Controls: Maintain adequate ventilation to keep vapor level below TWA for chemicals in this product. Maintain general industrial hygiene practices when using this product. Personal Protective Equipme nt: Eye Protection: safety glasses with top and side shields Skin Protection: Not applicable Inhalation Protection: adequate ventilation Precautionary Measures: Avoid contact with: eyes Wash thoroughly after handling. Use with adequate ventilation. Do not breathe: dust Protect from: heat Keep away from: reducers metals TLV: 10 mg/m³ (total dust); 3 mg/m³ (respirable dust) PEL: 15 mg/m³ (total dust); 5 mg/m³ (respirable dust) For Occupational Exposure Limits (OEL) for ingredients, see section 3 - Composition/Information on Ingredients.: ______9. PHYSICAL AND CHEMICAL PROPERTIES

Appearance: White powder Physical State: Solid Molecular Weight: 172.1 Odor: Odorless Odor Threshold: Not applicable pH: 7 Metal Corrosivity: Corrosivity Classification: Not classified as corrosive to metals according to GHS criteria. Stee l: Not applicable Aluminum: Not applicable Specific Gravity/ Relative Density (water = 1; air =1): 2.32 Viscosity: Not applicable Solubility: Water: Slightly soluble (240 mg/100 mL @ 25 °C) Acid: Not determined Other: Slightly soluble in glyce rol; Insoluble in most organic solvents. Partition Coefficient (n -octanol / water): log K ow = -0.17 Coefficient of Water / Oil: Not determined Melting Point: Decomposes @ 1450 °C (2642 °F) Decomposition Temperature: 1450 °C (2642 °F) Boiling Point: Not applicable Vapor Pressure: Not applicable Vapor Density (air = 1): Not applicable Evaporation Rate (water = 1): Not applicable Volatile Organic Compounds Content: None Flammable Properties: Material is not classified as flammab le according to GHS criteria. Material will not burn. Flash Point: Not applicable Method: Not applicable Flammability Limits: Lower Explosion Limits: Not applicable Upper Explosion Limits: Not applicable Autoignition Temperature: Not applicable Explosive Properties: Not classified according to GHS criteria. Oxidizing Properties: Not classified according to GHS criteria. Reactivity Properties: Not classifed as self -reactive, pyrophoric, self -heating or emitting flammable gases in cont act with water according to GHS criteria. Gas under Pressure: Not classified according to GHS criteria. ______10. STABILITY AND REACTIVITY

Chemical Stability: Stable when store d under proper conditions. Mechanical Impact: None reported Static Discharge: None reported. Reactivity / Incompatibility: May explode in contact with: aluminum diazomethane May react violently in contact with: reducers phosphorus Hazardous Decomposition: Heating to decomposition releases toxic and/or corrosive fumes of: sulfur oxides calcium oxide Conditions to Avoid: Heating to decomposition. Avoid creating dust. Poor Ventilation Incompatibles ______11. TOXICOLOGICAL INFORMATION

Toxicokinetics, Metabolism and Distribution: No health effects are anitcipated in normal use. Toxicologically Synergistic Products: None reported Acute Toxicity: Practica lly Non -toxic Based on classification principles, the classification criteria are not met. Specific Target Organ Toxicity - Single Exposure (STOT -SE): No data found Based on classification principles, the classification criteria are not met. Specific Target Organ Toxicity - Repeat Exposure (STOT -RE): No data found Based on classification principles, the classification criteria are not met. Skin Corrosion/Irritation: Based on classification principles, the classification criteria are not met. Testi ng data given below. Rabbit - Skin - Not irritating Eye Damage: No data found Based on classification principles, the classification criteria are not met. Sensitization: No data found. Based on classification principles, the classification criteri a are not met. CMR Effects/Properties (carcinogenic, mutagenic or toxic to reproduction): No data supporting germ cell mutagenicity, carcinogenicity or reproductive toxicity was found. Based on classification principles, the classification criteria are not met. IARC Listed: No NTP Listed: No O.S.H.A. Listed: No Symptoms/Effects: Ingestion: No Effects Anticipated Inhalation: May cause: coughing sneezing Skin Absorption: No effects anticipated Chronic Effects: No effects anticipated No effects anticipated Medical Conditions Aggravated: Pre -existing: Respiratory conditions ______12. ECOLOGICAL INFORMATION

Product Ecological Information: 96 hr Oryzias latipes LC50 > 100 mg/L; 48 hr Daphnia magna EC50 > 100 mg/L; 72 hr Selenastrum capricornutum ErC50 > 100 mg/L Based on classification principles, not classified as hazardous to the environment. No bioaccumulation potential Mobility in s oil: Moderate to High CEPA Categorization: Persistent Not inherently toxic to aquatic organisms Ingredient Ecological Information: -- Not applicable ______13. DISPOSAL CONSIDERATIONS

EPA Waste ID Number: Not applicable Special Instructions (Disposal): Place material in a plastic bag. If permitted by regulation, Mark bag 'Non -hazardous trash', and dispose of as normal refuse. Otherwise, Check with loc al municipal and state authorities and waste contractors for pertinent local information regarding the proper disposal of chemicals. Empty Containers: Working in a well -ventilated area, Rinse three times with an appropriate solvent. Collect rinsate and dispose of according to local, state or federal regulations. In the US, rinsate from empty containers is classified as hazardous waste and should be disposed of at an E.P. A. approved facility. Rinsate from empty containers may contain sufficient produc t to require disposal as hazardous waste. Dispose of empty container as normal trash. NOTICE (Disposal): These disposal guidelines are based on federal regulations and may be superseded by more stringent state or local requirements. Please consult your local environmental regulators for more information. In Europe: Chemical and analysis solutions must be disposed of in compliance with the respective national regulations. Product packaging must be disposed of in compliance with the country -specific re gulations or must be passed to a packaging return system. ______14. TRANSPORT INFORMATION

D.O.T.: D.O.T. Proper Shipping Name: Not Currently Regulated -- Hazard Class: NA Subsidiary Risk: NA ID Number: NA Packing Group: NA T.D.G.: Proper Shipping Name: Not Currently Regulated -- Hazard Class: NA Subsidiary Risk: NA UN Number/PIN: NA Packing Group: NA I.C.A.O.: I.C.A.O. Proper Shipping Name: Not Currently Regulated -- Hazard Class: NA Subsidiary Risk: NA ID Number: NA Packing Group: NA I.M.O.: Proper Shipping Name: Not Currently Regulated -- Hazard Class: NA Subsidiary Risk: NA ID Number: NA Packing Group: NA Marine Pollutant: Additional Information: There is a possibility that this product could be contained in a reagent set or kit composed of various compatible dangerous goods. If the item is NOT in a set or kit, the classification given above applies. If the item IS part of a set or kit, the classification would change to the following: UN3316 Chemical Kit, Class 9, PG II or III. If the item is not regulated, the Chemical Kit classification does not apply. ______15. REGULATORY INFORMATION

U.S. Federal Regulations: O.S.H.A.: This product does not meet the criteria for a hazardous substance as defined in the Hazard Communication Standard. (29 CFR 1910.1200) E.P.A.: S.A.R.A. Title III Sec tion 311/312 Categorization (40 CFR 370): This product is not hazardous under 29 CFR.1910.1200 and therefore is not covered by Title III under SARA. S.A.R.A. Title III Section 313 (40 CFR 372): This product does NOT contain any chemical subject to the re porting requirements of Section 313 of Title III of SARA. -- 302 (EHS) TPQ (40 CFR 355): Not applicable 304 CERCLA RQ (40 CFR 302.4): Not applicable 304 EHS RQ (40 CFR 355): Not applicable Clean Water Act (40 CFR 116.4): Not applicable RCRA: Contains no RCRA regulated substances. State Regulations: California Prop. 65: No Prop. 65 listed chemicals are present in this product. Identification of Prop. 65 Ingredient(s): None California Perchlorate Rule CCR Title 22 Chap 33: Not applicable Trade Secret Registry: Not applicable National Inventories: U.S. Inventory Status: TSCA Listed: Yes CAS Number: 7778 -18 -9 Canadian Inventory Status: DSL Listed: Yes EEC Inventory Status: EINECS Listed: Yes Australian Inventory (AICS) Status: Listed New Zealand Inventory (NZIoC) Status: Listed Korean Inventory (KECI) Status: Listed - See anhydrous Chemical Abstract (CAS) Registry Number Japan (ENCS) Inventory Status: Listed China (PRC) Inventory (MEP) Status: Listed ______16. OTHER INFORMATION

References: 29 CFR 1900 - 1910 (Code of Federal Regulations - Labor). Air Contaminants, Federal Register, Vol. 54, No. 12. Thursday, January 19, 1989. pp. 2332 -2983. Technical Judgment. CCINFO CHEM Source/Références CHIMIE. Canadian Centre for Occupational Health and Safety. Hamilton, Ontario Canada: 30 June 1993. The Merck Index, 11th Ed. Rahway, New Jersey: Merck and Co., Inc., 1989. TLV's T hreshold Limit Values and Biological Exposure Indices for 1992 -1993. American Conference of Governmental Industrial Hygienists, 1992. Complete Text of H phrases referred to in Section 3: Not applicable Revision Summary: . Substantial revision to comply with EU Reg 1272/2008, Reg 1907/2006 and UN GHS ( ST/SG/AC.10/36/Add.3). Date of MSDS Preparation: Day: 29 Month: October Year: 2014 MSDS Prepared: MSDS prepared by Product Compliance Department extension 3350 CC OHS Evaluation Note: This product has been classified and labeled in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). ______

Legend: NA - Not Applicable w/w - weight/w eight ND - Not Determined w/v - weight/volume NV - Not Available v/v - volume/volume

USER RESPONSIBILITY: Each user should read and understand this information and incorporate it in individual site safety programs in accordance with applicable hazard com munication standards and regulations.

THE INFORMATION CONTAINED HEREIN IS BASED ON DATA CONSIDERED TO BE ACCURATE. HOWEVER, NO WARRANTY IS EXPRESSED OR IMPLIED REGARDING THE ACCURACY OF THESE DATA OR THE RESULTS TO BE OBTAINED FROM THE USE THEREOF.

______1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

Product Name: NitraVer ®5 Nitrate Reagent Catalog Number: 1403599

Hach Company Emergency Telephone Numbers: P.O.Box 389 (Medical and Transportation) Loveland, CO USA 80539 (303) 623 -5716 24 Hour Service (97 0) 669 -3050 (515)232 -2533 8am - 4pm CST

MSDS Number: M00050 Chemical Name: Not applicable CAS Number: Not applicable Additional CAS No. (for hydrated forms): Not applicable Chemical Formula: Not applicable Chemical Family: Not applicable Intende d Use: Laboratory Reagent Determination of nitrate ______2. HAZARDS IDENTIFICATION

GHS Classification: Hazard categories: Acute Toxicity: Acute Tox. 4 -Orl Acute T oxicity: Acute Tox. 3 -Inh Skin Corrosion/Irritation: Skin Irrit. 2 Serious Eye Damage/Eye Irritation:Eye Irrit. 2 Respiratory or Skin Sensitization: Skin Sens.1 Germ Cell Mutagenicity: Muta. 2 Carcinogenicity: Carc. 1B Reproductive Toxicity: Repr. 2 Specific Target Organ Toxicity - Repeated Exposure: STOT RE. 2 Hazardous to the Aquatic Environment: Aquatic Chronic 1 GHS Label Elements: DANGER

Hazard statements: Harmful if swallowed. Toxic if inhaled. Causes skin irritation. Causes serious eye irritation. May cause an allergic skin reaction. Suspected of causing genetic defects by inhalation. May c ause cancer by inhalation. Suspected of damaging fertility. Suspected of damaging the unborn child. May cause damage to liver through prolonged or repeated exposure by inhalation. Very toxic to aquatic life with long lasting effects. Precautionary sta tements: Do not breathe dust/fume/gas/mist/vapours/spray. Contaminated work clothing should not be allowed out of the workplace. Handle environmental release according to local, state, federal, provincial requirements. Wear eye protection. IF ON SKIN : Wash with plenty of soap and water. If skin irritation or rash occurs: Get medical advice/attention. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation per sists: Get medical advice/attention. IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell. Rinse mouth. IF INHALED: Remove victim/person to fresh air and keep at rest in a position comfortable for breathing. If experiencing respira tory symptoms: Call a POISON CENTER or doctor/physician. P311 Call a POISON CENTER or doctor/physician. Dispose of contents/container according to state, local, federal or national regulations. HMIS: Health: 3* Flammability: 1 Reactivity: 0 Prot ective Equipment: X - See protective equipment, Section 8. NFPA: Health: 3 Flammability: 1 Reactivity: 0 Symbol: Not applicable WHMIS Hazard Classification: Class D, Division 1, Subdivision B - Toxic material (immediate effects) Class D, Divi sion 2, Subdivision A - Very toxic materials (other toxic effects) WHMIS Symbols: Acute Poison Other Toxic Effects ______3. COMPOSITION / INFORMATION ON INGREDIENTS

Hazardous Components according to GHS: Potassium Phosphate, Monobasic

CAS Number: 7778 -77 -0 Chemical Formula: KH 2PO 4 GHS Classification: Acute Tox. 4 - Orl, H302; Eye Irrit. 2, H319 Percent Range (Trade Secret): 15.0 - 25.0 Percent Range Units: weight / weight PEL: 15 mg/m 3 as total dust; 5 mg/m 3 as respirable dust TLV: 10 mg/m 3 as inhalable fraction; 3 mg/m 3 as respirable fraction

WHMIS Symbols: Not applicable Sulfanilic Acid

CAS Number: 121 -57 -3 Chemical Formula: C6H7NO 3S GHS Classification: Skin Irrit. 2, H315; Skin Sens. 1, H317; Eye Irrit. 2A, H319; Aquatic Chronic 3, H412 Percent Range (Trade Secret): 15.0 - 25.0 Percent Range Units: weight / weight PEL: 15 mg/m 3 as total dust; 5 mg/m 3 as respirable dust TLV: 10 mg /m 3 as inhalable dust; 3 mg/m 3 as respirable dust

WHMIS Symbols: Other Toxic Effects Cadmium

CAS Number: 7440 -43 -9 Chemical Formula: Cd GHS Classification: Acute Tox. 3 -Orl, H301; Acute Tox. 2 -Inh, H330; Muta. 2, H341; Carc. 1B, H350; Repr. 2, H361 ; STOT Rep. 1, H372; Aquatic Chronic 1, H410 Percent Range (Trade Secret): 5.0 - 10.0 Percent Range Units: weight / weight PEL: 0.005 mg/m 3 TLV: 0.01 mg/m 3 as inhalable dust; 0.002 mg/m 3 as respirable dust

WHMIS Symbols: Acute Poison Gentisic Acid

CAS Number: 490 -79 -9 Chemical Formula: C7H6O4 GHS Classification: Acute Tox. 4 - Orl, H302; Eye Irrit. 2A, H319 Percent Range (Trade Secret): 5.0 - 10.0 Percent Range Units: weight / weight PEL: 15 mg/m 3 as inhalable dust; 5 mg/m 3 as respirable TLV: 10 mg/m 3 as inhalable dust; 3 mg/m 3 as respirable dust

WHMIS Symbols: Not applicable Nitrate Extraction Powder

CAS Number: 9003 -05 -8 Chemical Formula: (C 3H5NO) x GHS Classification: Aquatic Chronic 1, H410 Percent Range (Trade Secret): < 0.01 Per cent Range Units: weight / weight PEL: 15 mg/m 3 as inhalable dust; 5 mg/m 3 as respirable dust TLV: 10 mg/m 3 as inhalable dust; 3 mg/m 3 as respirable dust

WHMIS Symbols: Not applicable Hazardous Components according to GHS: Yes - Aquatic Acute 2 or Aquatic Acute 3 Sodium Sulfate

CAS Number: 7757 -82 -6 Chemical Formula: Na 2SO 4 GHS Classification: Aquatic Acute 3, H402 Percent Range (Trade Secret): 25.0 - 35.0 Percent Range Units: weight / weight PEL: 15 mg/m 3 as inhalable dust; 5 mg/m 3 as respirable dust TLV: 10 mg/m 3 as inhalable dust; 3 mg/m 3 as respirable dust

WHMIS Symbols: Not applicable Magnesium Sulfate

CAS Number: 7487 -88 -9 Chemical Formula: MgSO 4 GHS Classificatio n: Not applicable Percent Range (Trade Secret): 1.0 - 10.0 Percent Range Units: weight / weight PEL: 15 mg/m 3 as inhalable dust; 5 mg/m 3 as respirable dust TLV: 10 mg/m 3 as inhalable dust; 3 mg/m 3 as respirable dust

WHMIS Symbols: Not applicable Co pper (II) Malonate

CAS Number: 7268 -92 -0 Chemical Formula: C3H2O4Cu GHS Classification: Not applicable Percent Range (Trade Secret): < 1.0 Percent Range Units: weight / weight PEL: 1 mg Cu/m 3 TLV: 1 mg Cu/m 3

WHMIS Symbols: Not applicable ______4. FIRST AID MEASURES

General Information: In the event of exposure, show this Material Safety Data Sheet and label (where possible) to a doctor. Advice to doctor: Treat symptomatically. Eye Contact: Immediately flush eyes with water for 15 minutes. Call physician. Skin Contact (First Aid): Wash skin with soap and plenty of water. Call physician if irritation develops. Remove contaminated clothing. Inhalation: Remove to fresh air. Give artificial respiration if necessary. Call physician. If breathing is difficult, give oxygen. Ingestion (First Aid): Administer milk or beaten egg whites at frequent intervals. Induce vomiting using syrup of ipecac or by sticking finger down throat. Never give anything by mouth to an unconscious person. Call physician immediately. ______5. FIRE FIGHTING MEASURES

Flammable Properties: Can burn in fire, releasing toxic vapors. Fire Fighting Instruction: As in any fire, wear self -contained breathing apparatus pressure -demand and full protective gear. Extinguishing Media: Use media appropriate to surrounding fire conditions Extinguishing Media NOT To Be Used: Not applicable Fire / Explosion Hazards: None reported Hazardous Combustion Products: Toxic fumes of: cadmium oxide phosphorus oxides sulfur oxides. carbon monoxide, carbon dioxide. ______6. ACCIDENTAL RELEASE MEASURES

Handling: Avoid contact with eyes skin clothing Do not breathe dust. Wash thoroughly after handling. Use with adequate ventilation. Maintain general industrial hygiene practices when using this product. Storage: Protect from: moisture Keep a way from: oxidizers powdered metals hydrazoic acid Flammability Class: Not applicable ______8. EXPOSURE CONTROLS / PERSONAL PROTECTION

Engineering Controls: Use a fume hood to avoid exposure to dust, mist or vapor. Personal Protective Equipment: Eye Protection: safety glasses with top and side shields Skin Protection: disposable latex gloves In the EU, the selected gloves must satisfy the specifications of EU Direct ive 89/686/EEC and standard EN 374 derived from it. lab coat Inhalation Protection: dust / mist mask and / or laboratory fume hood Precautionary Measures: Avoid contact with: eyes skin clothing Do not breathe: dust Wash thoroughly after ha ndling. Protect from: moisture Keep away from: oxidizers powdered metals TLV: Not established PEL: Not established For Occupational Exposure Limits (OEL) for ingredients, see section 3 - Composition/Information on Ingredients.: ______9. PHYSICAL AND CHEMICAL PROPERTIES

Appearance: Gray powder Physical State: Solid Molecular Weight: Not applicable Odor: Odorless Odor Threshold: None pH: 5% solution = 2.7 Metal Corrosivity: Corrosivity Classification: Not classified as corrosive to metals according to GHS criteria. Steel: 0.040 in/yr Aluminum: 0.011 in/yr Specific Gravity/ Relative Density (water = 1; air =1): 2.13 Viscosity: Not determined Sol ubility: Water: Slightly soluble Acid: Slightly soluble Other: Not determined Partition Coefficient (n -octanol / water): Not applicable Coefficient of Water / Oil: Not applicable Melting Point: 175°C; 347°F Decomposition Temperature: Not dete rmined Boiling Point: Not applicable Vapor Pressure: Not applicable Vapor Density (air = 1): Not applicable Evaporation Rate (water = 1): Not applicable Volatile Organic Compounds Content: Not applicable Flammable Properties: Can burn in fire , releasing toxic vapors. Flash Point: Not applicable Method: Not applicable Flammability Limits: Lower Explosion Limits: Not applicable Upper Explosion Limits: Not applicable Autoignition Temperature: Not available Explosive Properties: Not classified according to GHS criteria. Oxidizing Properties: Not classified according to GHS criteria. Reactivity Properties: Not classifed as self -reactive, pyrophoric, self -heating or emitting flammable gases in contact with water accord ing to GHS criteria. Gas under Pressure: Not classified according to GHS criteria. Not determined ______10. STABILITY AND REACTIVITY

Chemical Stability: Stable when stored u nder proper conditions. Mechanical Impact: None reported Static Discharge: None reported. Reactivity / Incompatibility: Incompatible with: oxidizers hydrazoic acid powdered metals Hazardous Decomposition: Heating to decomposition releases to xic and/or corrosive fumes of: cadmium oxide carbon dioxide phosphorus oxides carbon monoxide sulfur oxides Conditions to Avoid: Excess moisture ______11. TOXICOLOGICAL INFO RMATION

Toxicokinetics, Metabolism and Distribution: No information available for mixture. Toxicologically Synergistic Products: None reported Acute Toxicity: Acute Toxicity Estimate (ATE) - Calculated from Ingredient Toxicity Data ATE Oral Rat LD50 = 1470 mg/kg ATE Inhalation Rat LC50 = 31.6 mg/l Specific Target Organ Toxicity - Single Exposure (STOT -SE): Based on classification principles, the classification criteria are not met. Specific Target Organ Toxicity - Repeat Exposure (ST OT -RE): Liver Skin Corrosion/Irritation: Irritating to skin. Eye Damage: Irritating to eyes. Sensitization: Skin Sensitizer CMR Effects/Properties (carcinogenic, mutagenic or toxic to reproduction): Contains a reproductive toxin. Contains Listed Carcinogen Data supporting mutagenicity was found. Cadmium - Cytogenetic analysis - hamster ovary 1 µmol/l; Oral male rat TDLo = 155 mg/kg - 13 weeks pre -mating - effects on newborn growth and behavior; Oral female rat TDLo = 23 mg/kg - 1 -22 days after conception - blood and lymphatic system abnormalities An ingredient of this mixture is: IARC Group 2A: Suspected Carcinogen Cadmium An ingredient of this mixture is: NTP Listed Group 2 A: Suspected Carcinogen Cadmium An ingredient of this product is an OSHA listed carcinogen. Cadmium Symptoms/Effects: Ingestion: Harmful May cause: salivation vomiting abdominal pain anemia diarrhea kidney failure central nervo us system effects Inhalation: Harmful May cause: coughing headache nausea vomiting chest pain pneumonitis respiratory tract irritation lung damage kidney damage Skin Absorption: Harmful if absorbed through the skin Chronic Effects: Ch ronic overexposure may cause cancer kidney damage liver damage bone damage (osteosclerosis) Medical Conditions Aggravated: Pre -existing: Respiratory conditions Kidney conditions ______12. ECOLOGICAL INFORMATION

Product Ecological Information: -- No ecological data available for this product. Mobility in soil: No data available Ingredient Ecological Information: Cadmium: Fish 96hr LC50 = 7.8 mg/l; Crustacea 48hr EC5 0 = 0.58 mg/l; Algea 72hr EC50 = 0.132 mg/l; LC50 Mysidopsis bahia 96h = 0,0016 mg/l; LC50 Morone saxatilis 96h = 0,019 mg/l; No ecological data available for the ingredients of this product. CEPA Statment: Sulfanilic Acid, Potassium Phosphate, Mon obasic, Magnesium Sulfate, Sodium Sulfate and Cadmium: Persistent, not bioaccumulative or inherently toxic to aquatic organisms. ______13. DISPOSAL CONSIDERATIONS

EPA Waste ID Number: D006 Special Instructions (Disposal): Dispose of material in an E.P.A. approved hazardous waste facility. Empty Containers: Rinse three times with an appropriate solvent. Collect rinsate and dispose of according to local, st ate or federal regulations. Dispose of empty container as normal trash. Rinsate from empty containers may contain sufficient product to require disposal as hazardous waste. In the US, rinsate from empty containers is classified as hazardous waste and sh ould be disposed of at an E.P. A. approved facility. NOTICE (Disposal): These disposal guidelines are based on federal regulations and may be superseded by more stringent state or local requirements. Please consult your local environmental regulators for more information. In Europe: Chemical and analysis solutions must be disposed of in compliance with the respective national regulations. Product packaging must be disposed of in compliance with the country -specific regulations or must be passed to a packaging return system. ______14. TRANSPORT INFORMATION

D.O.T.: D.O.T. Proper Shipping Name: Toxic Solid, Inorganic, N.O.S. (Cadmium mixture) Hazard Class: 6.1 Subsid iary Risk: NA ID Number: UN3288 Packing Group: III T.D.G.: Proper Shipping Name: Toxic Solid, Inorganic, N.O.S. (Cadmium mixture) Hazard Class: 6.1 Subsidiary Risk: NA UN Number/PIN: 3288 Packing Group: III I.C.A.O.: I. C.A.O. Proper Shipping Name: Toxic Solid, Inorganic, N.O.S. (Cadmium mixture) Hazard Class: 6.1 Subsidiary Risk: NA ID Number: UN3288 Packing Group: III I.M.O.: Proper Shipping Name: Toxic Solid, Inorganic, N.O.S. (Cadmium mixture) Hazard Class: 6.1 Subsidiary Risk: NA ID Number: UN3288 Packing Group: III Additional Information: There is a possibility that this product could be contained in a reagent set or kit composed of various compatible dang erous goods. If the item is NOT in a set or kit, the classification given above applies. If the item IS part of a set or kit, the classification would change to the following: UN3316 Chemical Kit, Class 9, PG II or III. If the item is not regulated, the Chemical Kit classification does not apply. ALSO NOTE: If the National Competent Authority declares this product an environmental hazard by Special Provision 909 (IMDG) and Special Provision A97 (IATA) the classification may be UN3077 or UN3082. ______15. REGULATORY INFORMATION

U.S. Federal Regulations: O.S.H.A.: This product contains Cadmium and is regulated under 29CFR Subpart Z 1910.1027. This product meets the criter ia for a hazardous substance as defined in the Hazard Communication Standard. (29 CFR 1910.1200) E.P.A.: S.A.R.A. Title III Section 311/312 Categorization (40 CFR 370): Immediate (Acute) Health Hazard Delayed (Chronic) Health Hazard S.A.R.A. Title III Section 313 (40 CFR 372): This product contains a chemical(s) subject to the reporting requirements of Section 313 of Title III of SARA. Cadmium 302 (EHS) TPQ (40 CFR 355): Not applicable 304 CERCLA RQ (40 CFR 302.4): Cadmium 10 lbs. 30 4 EHS RQ (40 CFR 355): Not applicable Clean Water Act (40 CFR 116.4): Not applicable RCRA: Contains RCRA regulated substances. See Section 13, EPA Waste ID Number. State Regulations: California Prop. 65: WARNING - This product contains a chem ical known to the State of California to cause cancer. Identification of Prop. 65 Ingredient(s): Cadmium California Perchlorate Rule CCR Title 22 Chap 33: Not applicable Trade Secret Registry: Not applicable National Inventories: U.S. Inventory Status: All ingredients in this product are listed on the TSCA 8(b) Inventory (40 CFR 710). CAS Number: Not applicable Canadian Inventory Status: All ingredients of this product are DSL Listed. EEC Inventory Status: All ingredients use d to make this product are listed on EINECS / ELINCS. Australian Inventory (AICS) Status: All ingredients are listed. New Zealand Inventory (NZIoC) Status: All components either listed or exempt. Korean Inventory (KECI) Status: All components o f this product are either listed, listed as the anhydrous compound or exempt. Japan (ENCS) Inventory Status: All components either listed or exempt. China (PRC) Inventory (MEP) Status: All components either listed or exempt. ______16. OTHER INFORMATION

References: 29 CFR 1900 - 1910 (Code of Federal Regulations - Labor). Air Contaminants, Federal Register, Vol. 54, No. 12. Thursday, January 19, 1989. pp. 2332 -2983. TLV's Threshold Limit Values and Biological Exposure Indices for 1992 -1993. American Conference of Governmental Industrial Hygienists, 1992. NIOSH Pocket Guide to Chemical Hazards. Publ. No. 85 -114. Cincinnati: Department of Health and Human Services, 1985. IARC Monographs on the Evaluation of the Carcinogenic Risks to Humans. World Health Organization (Volumes 1 -42) Supplement 7. France: 1987. List of Dangerous Substances Classified in Annex I of the EEC Directive (67/548) - Classification, Packaging a nd Labeling of Dangerous Substances, Amended July 1992. Sixth Annual Report on Carcinogens, 1991. U.S. Department of Health and Human Services. Rockville, MD: Technical Resources, Inc. 1991. In -house information. Technical Judgment. Complete Text of H phrases referred to in Section 3: H301 Toxic if swallowed. H302 Harmful if swallowed. H315 Causes skin irritation. H317 May cause an allergic skin reaction. H319 Causes serious eye irritation. H330 Fatal if inhaled. H341 Suspected of causing g enetic defects. H350 May cause cancer. H361fd Suspected of damaging fertility. Suspected of damaging the unborn child. H372 Causes damage to organs through prolonged or repeated exposure. . H410 Very toxic to aquatic life with long lasting effects. H 412 Harmful to aquatic life with long lasting effects. Revision Summary: Substantial revision to comply with EU Reg 1272/2008, Reg 1907/2006 and UN GHS ( ST/SG/AC.10/36/Add.3). Date of MSDS Preparation: Day: 30 Month: July Year: 2014 MSDS Pre pared: MSDS prepared by Product Compliance Department extension 3350 CCOHS Evaluation Note: It is offered under exemption from WHMIS labeling as specified in the Controlled Products Regulation (CPR) Section 17. It is offered under the interim policy that was established by Health Canada permitting use of GHS -formatted safety data sheets in Canada prior to revision of CPR to GHS. This product has been classified and labeled in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). This SDS h as been prepared in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). ______

Legend: NA - Not Applicable w/w - weight/weight ND - Not Determined w/v - weight/volume NV - Not Available v/v - volume/volume

USER RESPONSIBILITY: Each user should read and understand this information and incorporate it in individual site safety programs in accordance with applicable hazard communication standards and regulations.

THE INF ORMATION CONTAINED HEREIN IS BASED ON DATA CONSIDERED TO BE ACCURATE. HOWEVER, NO WARRANTY IS EXPRESSED OR IMPLIED REGARDING THE ACCURACY OF THESE DATA OR THE RESULTS TO BE OBTAINED FROM THE USE THEREOF.

______1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

Product Name: Potassium 2 Reagent Solution Pillows Catalog Number: 1432298

Hach Company Emergency Telephone Numbers: P.O.Box 389 (Medical and Transportation) Loveland, CO USA 80539 (303) 623 -5716 24 Hour Service (970) 669 -3050 (515)232 -2533 8am - 4pm CST

MSDS Number: M00281 Chemical Name: Not applicable CAS Number: Not applicable Additional CAS No. (for hydrated forms): Not applicable Chemical Formula: Not applicable Chemical Family: Not applicable Intended Use: Laboratory Reagent ______2. HAZARDS IDENTIFICATION

GHS Classification: Hazard categories: Acute Toxicity: Acute Tox. 3 -Orl Acute Toxicity: Acute Tox. 3 -Derm Acute Toxicity: Acute Tox. 4-Inh Skin Corrosion/I rritation: Skin Corr. 1B Respiratory or Skin Sensitization: Skin Sens.1 Respiratory or Skin Sensitization: Resp. Sens.1 Germ Cell Mutagenicity: Muta. 2 Carcinogenicity: Carc. 2 Reproductive Toxicity: Repr. 2 Specific Target Organ Toxicity - Single Ex posure: STOT SE 1 Specific Target Organ Toxicity - Repeated Exposure: STOT RE. 1 Hazardous to the Aquatic Environment: Aquatic Acute 2 GHS Label Elements: DANGER

Hazard statements: Suspected of causing cancer. Causes damage to organs. Toxic if swallowed. Toxic in contact with skin. Harmful if inhaled. Causes severe skin burns and eye damage. May cause an allergic skin reaction. May cau se allergy or asthma symptoms or breathing difficulties if inhaled. Suspected of causing genetic defects by inhalation. Suspected of causing cancer by inhalation. Suspected of damaging fertility. Suspected of damaging the unborn child. Causes damage to liver by inhalation. Precautionary statements: Obtain special instructions before use. Do not breathe dust/fume/gas/mist/vapours/spray. Do no eat, drink or smoke when using this product. Use only outdoors or in a well -ventilated area. Contaminated work clothing should not be allowed out of the workplace. Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF ON SKIN (or hair): Remove/Take off immedi ately all contaminated clothing. Rinse skin with water/shower. IF SWALLOWED: rinse mouth. Do NOT induce vomiting. Immediately call a POISON CENTER or doctor/physician. IF INHALED: Remove victim/person to fresh air and keep at rest in a position comforta ble for breathing. If experiencing respiratory symptoms: Call a POISON CENTER or doctor/physician. Wash contaminated clothing before reuse. Dispose of contents/container according to state, local, federal or national regulations. HMIS: Health: 3* Flammability: 2 Reactivity: 0 Protective Equipment: X - See protective equipment, Section 8. NFPA: Health: 3 Flammability: 2 Reactivity: 0 Symbol: Not applicable WHMIS Hazard Classification: Class B, Division 3 - Combustible liquids Class D, Division 1, Subdivision B - Toxic material (immediate effects) Class D, Division 2, Subdivision A - Very toxic materials (other toxic effects) Class E - Corrosive material WHMIS Symbols: Acute Poi son Flammable / Combustible Corrosive ______3. COMPOSITION / INFORMATION ON INGREDIENTS

Hazardous Components according to GHS: Formaldehyde

CAS Number: 50 -00 -0 Chemical For mula: CH 2O GHS Classification: Flam. Liq. 4, H227; Acute Tox. 3 -Orl, H301; Acute Tox. 3 -Derm, H311; Skin Corr. 1B, H314; Skin Sens. 1, H317; Acute Tox. 3 -Inh, H331; Resp. Sens. 1, H334; Muta. 2, H341; Carc. 2, H351; Repr. 2, H361; STOT Single 1, H370; Aquatic Acute 2, H401 Percent Range (Trade Secret): 30.0 - 40.0 Percent Range Units: weight / weight PEL: 0.75 ppm TLV: 0.3 ppm

WHMIS Symbols: Acute PoisonOther Toxic Effects Methyl Alcohol

CAS Number: 67 -56 -1 Chemical Formula: CH 3OH GHS Classification: Flam. Liq 2, H225; Acute Tox 3 -Orl, H301; Acute Tox 3 -Derm, H311; Skin Irrit. 2, H315; Eye Irrit. 2A, H319; Acute Tox 3 -Inh, H331; Muta. 2, H341; Repr. 2, H361; STOT SE1, H370 Percent Range (Trade Secret): 10.0 - 20.0 Percent Range Units: weight / weight PEL: 200 ppm TLV: 200 ppm

WHMIS Symbols: Acute PoisonFlammable / CombustibleOther Toxic Effects Hazardous Components according to GHS: No Demineralized Water

CAS Number: 7732 -18 -5 Chemical Formula: H2O GHS Classificatio n: Not a dangerous substance according to GHS. Percent Range (Trade Secret): 50.0 - 60.0 Percent Range Units: weight / weight PEL: Not established TLV: Not established

WHMIS Symbols: Not applicable ______4. FIRST AID MEASURES

General Information: In the event of exposure, show this Material Safety Data Sheet and label (where possible) to a doctor. Advice to doctor: Treat symptomatically. Eye Contact: Immediately flus h eyes with water for 15 minutes. Call physician immediately. Skin Contact (First Aid): Wash skin with soap and plenty of water for 15 minutes. Call physician immediately. Inhalation: Remove to fresh air. Give artificial respiration if necessary . Call physician. Ingestion (First Aid): Do not induce vomiting. Give 1 -2 glasses of water. Call physician immediately. Never give anything by mouth to an unconscious person. ______5. FIRE FIGHTING MEASURES

Flammable Properties: Combustible Liquid Combustion generates toxic fumes. Vaporizes easily at normal temperatures. This material does NOT sustai n combustion when tested according to the UN Recommendation's "Methods of Testing for Combustibility". Can burn in fire, releasing toxic vapors. Fire Fighting Instruction: As in any fire, wear self -contained breathing apparatus pressure -demand and ful l protective gear. Containers can build up pressure if exposed to heat. Extinguishing Media: Use media appropriate to surrounding fire conditions Extinguishing Media NOT To Be Used: Not applicable Fire / Explosion Hazards: Combustible liquid Do not expose to flames. Hazardous Combustion Products: Toxic fumes of: formaldehyde carbon monoxide, carbon dioxide. ______6. ACCIDENTAL RELEASE MEASURES

Spill Response Noti ce: Only persons properly qualified to respond to an emergency involving hazardous substances may respond to a spill according to federal regulations (OSHA 29 CFR 1910.120(a)(v)) and per your company's emergency response plan and guidelines/procedures. See Section 13, Special Instructions for disposal assistance. Containment Technique: Releases of this material may contaminate the environment. Remove all combustible material from spill area. Remove all ignition and spark -creating sources from the spill area. Cover spilled liquid with a commercially available flammable liquid sorbent such as vapor barrier blanket or activated carbon to avoid evolution of fumes. Vapors may travel to a source of ignition and flash back. May be ignited by: heat, s parks, or flames. Material will float on water creating a fire hazard. Dike the material to create a barrier to combustibles. Dike large spills to keep spilled material from entering sewage and drainage systems or bodies of water. Clean -up Technique: Eliminate all sources of ignition. Do not breathe the fumes. If permitted by regulation, Cover with an inert material, such as sand. Use only non -sparking tools. Sweep up material. Incinerate material at a government approved hazardous waste facili ty. Decontaminate the area of the spill with a soap solution. Otherwise, Pick up spill for disposal and place in a closed container Dispose of in accordance with local, state and federal regulations or laws. Evacuation Procedure: Evacuate general a rea (50 foot radius or as directed by your facility's emergency response plan) when: any quantity is spilled. If conditions warrant, increase the size of the evacuation. DOT Emergency Response Guide Number: 132 ______7. HANDLING AND STORAGE

Handling: Avoid contact with skin eyes clothing Do not breathe mist or vapors. Use with adequate ventilation. Wash thoroughly after handling. Maintain general industrial hygiene practices when using this product. Storage: Keep container tightly closed w hen not in use. Protect from: heat sparks, flames and other ignition sources Flammability Class: Class II ______8. EXPOSURE CONTROLS / PERSONAL PROTECTION

Engineering Controls: Have an eyewash station nearby. Have a safety shower nearby. Use a fume hood to avoid exposure to dust, mist or vapor. Maintain general industrial hygiene practices when using this product. Personal Protective Equipment: Eye P rotection: safety glasses with top and side shields Skin Protection: disposable latex gloves lab coat In the EU, the selected gloves must satisfy the specifications of EU Directive 89/686/EEC and standard EN 374 derived from it. Inhalation Protec tion: laboratory fume hood Precautionary Measures: Avoid contact with: eyes skin clothing Do not breathe: mist/vapor Use with adequate ventilation. Wash thoroughly after handling. Protect from: heat TLV: Formaldehyde: Ceiling: 0.3 ppm; Methanol: 200 ppm PEL: Formaldehyde: 0.75 ppm; Methanol: 200 ppm For Occupational Exposure Limits (OEL) for ingredients, see section 3 - Composition/Information on Ingredients.: ______9. PHYSICAL AND CHEMICAL PROPERTIES

Appearance: Clear, colorless Physical State: Liquid Molecular Weight: Not applicable Odor: Pungent Odor Threshold: 0.8 ppm pH: 2.8 -4.0 Metal Corrosivity: Corrosivity Classification: Not classi fied as corrosive to metals according to GHS criteria. Steel: Not determined Aluminum: Not determined Specific Gravity/ Relative Density (water = 1; air =1): 1.08 Viscosity: Not determined Solubility: Water: Soluble Acid: Not determined Other: Soluble in alcohol and acetone Partition Coefficient (n -octanol / water): 0.35 Coefficient of Water / Oil: Not applicable Melting Point: -15 °C 5 °F Decomposition Temperature: Not determined Boiling Point: 96 °C 204.8 °F Vapor P ressure: Not determined Vapor Density (air = 1): 1.04 Evaporation Rate (water = 1): Not determined Volatile Organic Compounds Content: Not available Flammable Properties: Can burn in fire, releasing toxic vapors. Flash Point: 56 -63° C (133 -145° F) Method: Open cup Flammability Limits: Lower Explosion Limits: 7% Upper Explosion Limits: 70% Autoignition Temperature: 420° C (788º F) Explosive Properties: Not classified according to GHS criteria. Oxidizing Properties: Not classified according to GHS criteria. Reactivity Properties: Not classifed as self -reactive, pyrophoric, self -heating or emitting flammable gases in contact with water according to GHS criteria. Gas under Pressure: Not classified according to GHS criteria. ______10. STABILITY AND REACTIVITY

Chemical Stability: Stable when stored under proper conditions. Mechanical Impact: None reported Static Discharge: None reported. Reactivity / Incompatibility: Incompatible with: oxidizers alkalies Hazardous Decomposition: Heating to decomposition releases toxic and/or corrosive fumes of: formaldehyde carbon dioxide carbon monoxide Conditions to Avoid: Contact with heat, sparks, open flames or other ignition sources. Exposure to air. ______11. TOXICOLOGICAL INFORMATION

Toxicokinetics, Metabolism and Distribution: No informati on available for mixture. Toxicologically Synergistic Products: None reported Acute Toxicity: Acute Toxicity Estimate (ATE) - Calculated from Ingredient Toxicity Data Oral LD50 ATE = 238 mg/kg Dermal LD50 ATE = 658 mg/kg Inhalation LD50 AT E = 7.2 mg/L Specific Target Organ Toxicity - Single Exposure (STOT -SE): Central nervous system Heart Kidneys Liver Specific Target Organ Toxicity - Repeat Exposure (STOT -RE): Based on classification principles, the classification criteria are n ot met. Skin Corrosion/Irritation: Corrosive to skin. Eye Damage: Corrosive to eyes. Sensitization: Skin Sensitizer CMR Effects/Properties (carcinogenic, mutagenic or toxic to reproduction): Contains Listed Carcinogen This product doe s NOT contain any NTP listed chemicals. An ingredient of this product is an OSHA listed carcinogen. Formaldehyde Symptoms/Effects: Ingestion: Methanol causes cardiovascular effects such as cardiac depression and blood pressure changes. Meth anol causes central nervous system depression, symptoms may include: drunkenness, drowsiness, dizziness, lightheadedness, unconsciousness and coma. Methanol may cause irritation of the eyes, visual impairment or blindness. May cause: vomiting kidney da mage liver damage circulatory collapse Inhalation: Methanol causes cardiovascular effects such as cardiac depression and blood pressure changes. Methanol causes central nervous system depression, symptoms may include: drunkenness, drowsiness, dizziness, lightheadedness, unconsciousness and coma. Methan ol may cause irritation of the eyes, visual impairment or blindness. May cause: respiratory tract irritation allergic respiratory reaction shortness of breath Very large doses may cause: lung damage Effects similar to those of ingestion. Skin Abso rption: Effects similar to those of ingestion Effects similar to those of inhalation Chronic Effects: Chronic overexposure may cause cancer skin sensitization allergic respiratory reactions liver damage kidney damage Medical Conditions Aggrav ated: Allergies or sensitivity to formaldehyde. Persons with eye, kidney, liver, or respiratory problems may be more susceptible to formaldehyde. ______12. ECOLOGICAL INFORMATION

Product Ecological Information: Bluegill LC50 = 100µg/l/96H; Catfish (fresh water) TLm = 32 ppm/24H; Fathead minnow LC50 = 10 -100 µl/l/96H; Rainbow trout LC50 = 168 mg/l/48H -- LC50 fish 96h = 52.5 mg/l; LC50 curstaceans 48h = 1070 mg/l; EC50 Cru staceans 48h = 14 mg/l Ingredient Ecological Information: None available ______13. DISPOSAL CONSIDERATIONS

EPA Waste ID Number: D001 Special Instructions (Disposal): Incine rate material at an E.P.A. approved hazardous waste facility. Empty Containers: Rinse three times with an appropriate solvent. Collect rinsate and dispose of according to local, state or federal regulations. Dispose of empty container as normal trash . In the US, rinsate from empty containers is classified as hazardous waste and should be disposed of at an E.P. A. approved facility. Rinsate from empty containers may contain sufficient product to require disposal as hazardous waste. NOTICE (Disposal ): These disposal guidelines are based on federal regulations and may be superseded by more stringent state or local requirements. Please consult your local environmental regulators for more information. In Europe: Chemical and analysis solutions must be disposed of in compliance with the respective national regulations. Product packaging must be disposed of in compliance with the country -specific regulations or must be passed to a packaging return system. ______14. TRANSPORT INFORMATION

D.O.T.: D.O.T. Proper Shipping Name: Formaldehyde, solutions, flammable -- Hazard Class: 3 Subsidiary Risk: 8 ID Number: UN1198 Packing Group: III T.D.G.: Proper Shipping Name: Formaldehyde solution -- Hazard Class: 3 Subsidiary Risk: 8 UN Number/PIN: 1198 Packing Group: III I.C.A.O.: I.C.A.O. Proper Shipping Name: Formaldehyde Solution, Flammable -- Hazard Class: 3 Subsidi ary Risk: 8 ID Number: UN1198 Packing Group: III I.M.O.: Proper Shipping Name: Formaldehyde Solution, Flammable -- Hazard Class: 3 Subsidiary Risk: 8 ID Number: UN1198 Packing Group: III Additional Information: There i s a possibility that this product could be contained in a reagent set or kit composed of various compatible dangerous goods. If the item is NOT in a set or kit, the classification given above applies. If the item IS part of a set or kit, the classificatio n would change to the following: UN3316 Chemical Kit, Class 9, PG II or III. If the item is not regulated, the Chemical Kit classification does not apply. ______15. REGULATORY INFOR MATION

U.S. Federal Regulations: O.S.H.A.: This product meets the criteria for a hazardous substance as defined in the Hazard Communication Standard. (29 CFR 1910.1200) This product contains Formaldehyde and is regulated under 29CFR Subpart Z 1910.1048. E.P.A.: S.A.R.A. Title III Section 311/ 312 Categorization (40 CFR 370): Immediate (Acute) Health Hazard Delayed (Chronic) Health Hazard Fire Hazard S.A.R.A. Title III Section 313 (40 CFR 372): This product contains a chemical(s) subject to the reporting requirements of Section 313 of Ti tle III of SARA. Formaldehyde, Methanol 302 (EHS) TPQ (40 CFR 355): Formaldehyde 500 lbs. 304 CERCLA RQ (40 CFR 302.4): Formaldehyde 100 lbs. Methanol 5000 lbs. 304 EHS RQ (40 CFR 355): Formaldehyde - RQ 100 lbs Clean Water Act (40 CFR 116.4): Formaldehyde - RQ 100 lbs. RCRA: Contains RCRA regulated substances. See Section 13, EPA Waste ID Number. State Regulations: California Prop. 65: WARNING - This product contains a chemical known to the State of California to cause birth defects or other reproductive harm. Identification of Prop. 65 Ingredient(s): Methanol California Perchlorate Rule CCR Title 22 Chap 33: Not applicable Trade Secret Registry: Not applicable National Inventories: U.S. Inventory Status: All ingred ients in this product are listed on the TSCA 8(b) Inventory (40 CFR 710). CAS Number: Not applicable Canadian Inventory Status: All ingredients of this product are DSL Listed. EEC Inventory Status: All ingredients used to make this product are listed on EINECS / ELINCS. Australian Inventory (AICS) Status: All ingredients are listed. New Zealand Inventory (NZIoC) Status: All components either listed or exempt. Korean Inventory (KECI) Status: All components of this product are either listed, listed as the anhydrous compound or exempt. Japan (ENCS) Inventory Status: All components either listed or exempt. China (PRC) Inventory (MEP) Status: All components either listed or exempt. ______16. OTHER INFORMATION

References: TLV's Threshold Limit Values and Biological Exposure Indices for 1992 -1993. American Conference of Governmental Industrial Hygienists, 1992. Air Contaminants, Federal Register, Vol. 54, No. 12. Thursday, January 19, 1989. pp. 2332 -2983. The Merck Index, 11th Ed. Rah way, New Jersey: Merck and Co., Inc., 1989. Sax, N. Irving. Dangerous Properties of Industrial Materials, 7th Ed. New York: Van Nostrand Reinhold Co., 1989. Fire Protection Guide on Hazardous Materials, 10th Ed. Quincy, MA: National Fire Protection Fire Protection Guide on Hazardous Materials, 10th Ed. Quincy, MA: National Fire Protection Association, 1991. NIOSH Pocket Guide to Chemical Hazards. Publ. No. 85 -114. Cincinnati: Department of Health and Human Services, 1985. Gosselin, R. E. et a l. Clinical Toxicology of Commercial Products, 5th Ed. Baltimore: The Williams and Wilkins Co., 1984. IARC Monographs on the Evaluation of the Carcinogenic Risks to Humans. World Health Organization (Volumes 1 -42) Supplement 7. France: 1987. Techni cal Judgment. Vendor Information. CCINFO RTECS. Canadian Centre for Occupational Health and Safety. Hamilton, Ontario Canada: 30 June 1993. In -house information. Patty, Frank A. Industrial Hygiene and Toxicology, 3rd Revised Edition. Volume 2. New York: A Wiley -Interscience Publication, 1981. Complete Text of H phrases referred to in Section 3: H225 Highly flammable liquid and vapour. H227 Combustible liquid. H301 Toxic if swallowed. H311 Toxic in contact with skin. H314 Causes severe skin burns and eye damage. H315 Causes skin irritation. H317 May cause an allergic skin reaction. H319 Causes serious eye irritation. H331 Toxic if inhaled. H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled. H341 Suspected of causing genetic defects. H351 Suspected of causing cancer. H361fd Suspected of damaging fertility. Suspected of damaging the unborn child. H370 Causes damage to organs. H401 Toxic to aquatic life. Revision Summary: New SDS Substantial revision to comply with EU Reg 1272/2008, Reg 1907/2006 and UN GHS ( ST/SG/AC.10/36/Add.3). Date of MSDS Preparation: Day: 05 Month: March Year: 2015 MSDS Prepared: MSDS prepared by Product Compliance Department extension 3350 CCOHS Evaluation Note: It is offered under exemption from WHMIS labeling as specified in the Controlled Products Regulation (CPR) Section 17. It is offered under the interim policy that was established by Health Canada permitting use of GHS -formatted safety data sheets in Canada prior to revision of CPR to GHS. This product has been classified and labeled in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). This SDS has been prepared in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). ______

Legend: NA - Not Applicable w/w - weight/weight ND - Not Determined w/v - weight/volume NV - Not Available v/v - volume/volume

USER RESPONSIBILITY: Each user should read and understand thi s information and incorporate it in individual site safety programs in accordance with applicable hazard communication standards and regulations.

THE INFORMATION CONTAINED HEREIN IS BASED ON DATA CONSIDERED TO BE ACCURATE. HOWEVER, NO WARRANTY IS EXPRESSE D OR IMPLIED REGARDING THE ACCURACY OF THESE DATA OR THE RESULTS TO BE OBTAINED FROM THE USE THEREOF.

______1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

Product Name: Potassium 3 Reagent Catalog Number: 1432399

Hach Company Emergency Telephone Numbers: P.O.Box 389 (Medical and Tr ansportation) Loveland, CO USA 80539 (303) 623 -5716 24 Hour Service (970) 669 -3050 (515)232 -2533 8am - 4pm CST

MSDS Number: M00069 Chemical Name: Sodium Tetraphenylborate CAS Number: 143 -66 -8 Additional CAS No. (for hydrated forms): Not applicable Chemical Formula: C24 H20 BNa Chemical Family: Organometallic Compounds Intended Use: Laboratory Use Determination of potassium ______2. HAZARDS IDENTIFICATION

GHS Classification: Hazard categories: Acute Toxicity: Acute Tox. 3 -Orl GHS Label Elements: DANGER

Hazard statements: Toxic if swallowed. Precautionary statements: Wash thoroughly after handling. IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. Rinse mouth. . HMIS: Health: 2 Flammability: 1 Reactivity: 0 Protective Equipment: X - See protective equipment, Section 8. NFPA: Health: 2 Flammability: 1 Reactivity: 0 Symbol: Not applicable WHMIS Hazard Classification: Not applicable WHMIS Symbols: Not applicable ______3. COMPOSITION / INFORMATION ON INGREDIENTS

Hazardous Components according to GHS : Sodium Tetraphenylborate CAS Number: 143 -66 -8 Chemical Formula: C24 H20 BNa GHS Classification: Acute Tox. 3 Orl., H301 Percent Range (Trade Secret): 100.0 Percent Range Units: weight / weight PEL: 15 mg/m 3 as inhalable dust; 5 mg/m 3 as respirable dust TLV: 10 mg/m 3 as inhalable dust; 3 mg/m 3 as respirable dust

WHMIS Symbols: Not applicable ______4. FIRST AID MEASURES

General Information: In the event of exp osure, show this Material Safety Data Sheet and label (where possible) to a doctor. Advice to doctor: Treat symptomatically. Eye Contact: Immediately flush eyes with water for 15 minutes. Call physician if irritation develops. Skin Contact (First Ai d): Remove contaminated clothing. Wash skin with soap and plenty of water. Call physician if irritation develops. Inhalation: Remove to fresh air. Give artificial respiration if necessary. If breathing is difficult, give oxygen. Call physician. In gestion (First Aid): Poison. Call physician immediately. Do not induce vomiting. Rinse mouth with plenty of water. Give 1 -2 glasses of water. Never give anything by mouth to an unconscious person. ______5. FIRE FIGHTING MEASURES

Flammable Properties: Material is not classified as flammable according to GHS criteria. May be combustible at high temperature. During a fire, irritating and highly toxic gases may be generated by th ermal decomposition. Fire Fighting Instruction: As in any fire, wear self -contained breathing apparatus pressure -demand and full protective gear. Extinguishing Media: Water. Carbon dioxide Dry chemical. Extinguishing Media NOT To Be Used: Not appli cable Fire / Explosion Hazards: None reported Hazardous Combustion Products: May emit acrid smoke and fumes. Toxic fumes of: carbon monoxide, carbon dioxide. boron compounds sodium oxides ______6. ACCIDENTAL RELEASE MEASURES

Handling: Maintain general industrial hygiene practices when using this product. Avoid contact with eyes skin clothing Use with adequate ventilatio n. Do not breathe dust. Wash thoroughly after handling. Storage: Keep container tightly closed when not in use. Keep this product in its original container when not in use. Store in a cool, dark, dry place. Protect from: moisture light extreme te mperatures heat Keep away from: acids / acid fumes. bases oxidizers Flammability Class: Not applicable ______8. EXPOSURE CONTROLS / PERSONAL PROTECTION

Engineering Controls: Maintain general industrial hygiene practices when using this product. A system of local and/or general exhaust is recommended to keep exposures as low as possible Have an eyewash station nearby. Personal Protective Equipment: Eye Protection: safety glasses with top and side shields Skin Protection: nitrile gloves In the EU, the selected gloves must satisfy the specifications of EU Directive 89/686/EEC and standard EN 374 derived from it. lab coat Inhalation Protection: adequate ventilation Pr ecautionary Measures: Avoid contact with: eyes skin clothing Use with adequate ventilation. Do not breathe: dust Wash thoroughly after handling. Protect from: moisture light Keep away from: strong acids bases oxidizers TLV: 10 mg/m 3 as inha lable dust; 3 mg/m 3 as respirable dust PEL: 15 mg/m 3 as inhalable dust; 5 mg/m 3 as respirable dust For Occupational Exposure Limits (OEL) for ingredients, see section 3 - Composition/Information on Ingredients.: ______9. PHYSICAL AND CHEMICAL PROPERTIES

Appearance: White crystals Physical State: Solid Molecular Weight: 342.24 Odor: Odorless Odor Threshold: Not applicable pH: 9.6 (5 % Solution) Metal Corrosivity: Corrosivity Classification: Not classified as corrosive to metals according to GHS criteria. Steel: Not applicable Aluminum: Not applicable Specific Gravity/ Relative Density (water = 1; air =1): Not determined Vis cosity: Not applicable Solubility: Water: 50 g/L Acid: Unstable in acid Other: Soluble in acetone. Slightly soluble in ether and chloroform. Insoluble in petroleum ether. Partition Coefficient (n -octanol / water): KOWWIN Estimation: log K ow = 6.28 Coefficient of Water / Oil: Not determined Melting Point: Decomposes: > 300 °C (> 572 °F) Decomposition Temperature: > 300 °C (> 572 °F) Boiling Point: Not applicable Vapor Pressure: Not applicable Vapor Density (air = 1): Not applicable Evaporation Rate (water = 1): Not applicable Volatile Organic Compounds Content: Not applicable Flammable Properties: Material is not classified as flammable according to GHS criteria. May be combustible at high temperature. During a fire, irritating and highly toxic gases may be generated by thermal decomposition. Flash Point: Not applicable Method: Not applicable Flammability Limits: Lower Explosion Limits: Not applicable Upper Explosion Limits: Not applicable Autoignition Temperature: No t determined Explosive Properties: Not classified according to GHS criteria. Oxidizing Properties: Not classified according to GHS criteria. Reactivity Properties: Not classifed as self -reactive, pyrophoric, self -heating or emitting flammable g ases in contact with water according to GHS criteria. Gas under Pressure: Not classified according to GHS criteria. ______10. STABILITY AND REACTIVITY Chemical Stability: Stabl e when stored under proper conditions. Mechanical Impact: None reported Static Discharge: None reported. Reactivity / Incompatibility: Incompatible with: strong acids strong bases strong oxidizers Hazardous Decomposition: Combustion gives off bl ack, sooty, toxic smoke Heating to decomposition releases: carbon dioxide carbon monoxide boron compounds sodium oxides Conditions to Avoid: Avoid creating dust. Excess moisture Exposure to air. Heating to decomposition. Exposure to light. Cont act with acid or acid fumes Contact with oxidizers ______11. TOXICOLOGICAL INFORMATION

Toxicokinetics, Metabolism and Distribution: No information available Toxicologically Synergistic Products: None reported Acute Toxicity: Toxicological Testing Route Data Given Below Oral Rat LD50 = 288 mg/kg Specific Target Organ Toxicity - Single Exposure (STOT -SE): No data found Based on classification principles , the classification criteria are not met. Specific Target Organ Toxicity - Repeat Exposure (STOT -RE): No data found Based on classification principles, the classification criteria are not met. Skin Corrosion/Irritation: No data found. Health effects are not known. Quantitative structure -activity relationship (QSAR) Estimation Not corrosive or irritating to skin. Skin corrosion and irritation potential by physicochemical property limits and structural rules according to ToxTree decision tree approa ch. Toxtree ( Ideaconsult, Ltd) Based on classification principles, the classification criteria are not met. Eye Damage: No data found Quantitative structure -activity relationship (QSAR) Estimation Not skin corrosion R34 or R35 Toxtree ( Ideaconsult , Ltd) Based on classification principles, the classification criteria are not met. Sensitization: No data found. Based on classification principles, the classification criteria are not met. CMR Effects/Properties (carcinogenic, mutagenic or toxic t o reproduction): No germ cell mutagenicity, carcinogenicity or reproductive toxicity data found. Quantitative structure -activity relationship (QSAR) Estimation Benigni / Bossa rules for mutagenicity and carcinogenicity No Alerts for carcinogenic acitivi ty Toxtree ( Ideaconsult, Ltd) Based on classification principles, the classification criteria are not met. IARC Listed: No NTP Listed: No O.S.H.A. Listed: No Symptoms/Effects: Ingestion: Toxic May cause: nausea vomiting abdominal pain diarrhea muscular weakness death Inhalation: No data reported. Toxic properties unknown. Toxicological properties of this substance have not been fully investigated Skin Absorption: None Reported Toxic properties unknown. Toxicological properti es have not been fully investigated Chronic Effects: None reported Medical Conditions Aggravated: None reported ______12. ECOLOGICAL INFORMATION

Product Ecological Information: -- Do not place in landfil. Recycle appropriately. Do not release into the environment. Mobility in soil: low CEPA Categorization: Persistent Not Bioaccumulative Not inherently toxic to aquatic organisms BIOWIN Estimation: Not readily biodegradable; KOWWIN Estimation: log K ow = 6.28; BCFBAF Estimation: log BCF = 3.98; KOCWIN Estimation: log K oc = 7.07 Ingredient Ecological Information: -- Not applicable ______13. DISPOSAL CONSIDERATIONS

EPA Waste ID Number: Not applicable Special Instructions (Disposal): Check with local municipal and state authorities and waste contractors for pertinent local information regarding the proper disposal of chemicals. Empty Containers: Rinse three times with an appropriate solvent. Collect rinsate and dispose of according to local, state or federal regulations. In the US, rinsate from empty containers is classified as hazardous waste and should be disposed of at an E.P. A. approved facility. Rinsate from empty containers may contain sufficient product to require disposal as hazardous waste. NOTICE (Disposal): These disposal guidelines are based on federal regulations and may be superseded by more stringent state or local requirements. Please consult your local environmental regulators for more information. In Europe: Chemical and analysis solutions must be disposed of in compliance with the respective national regulations. Product packaging must be disposed of in compliance with the country -specific regulations or must be passed to a packaging return system. ______14. TRANSPORT INFORMATION

D.O.T.: D.O.T. Proper Shipping Name: Toxic Solid, Organic, N.O.S. (Sodium tetraphenyl borate) Hazard Class: 6.1 Subsidiary Risk: NA ID Number: UN28 11 Packing Group: III T.D.G.: Proper Shipping Name: Toxic Solid, Organic, N.O.S. (Sodium tetraphenyl borate) Hazard Class: 6.1 Subsidiary Risk: NA UN Number/PIN: 2811 Packing Group: III I.C.A.O.: I.C.A.O. Proper Shipping Name: Toxic Solid, Organic, N.O.S. (Sodium tetraphenyl borate) Hazard Class: 6.1 Subsidiary Risk: NA ID Number: UN2811 Packing Group: III I.M.O.: Proper Shipping Name: Toxic Solid, Organic, N.O.S. (Sodium tetraphenyl borate) Hazard Class: 6.1 Subsidiary Risk: NA ID Number: UN2811 Packing Group: III Marine Pollutant: Additional Information: There is a possibility that this product could be contained in a reagent set or kit composed of various compatible dangerous goods. If the item is N OT in a set or kit, the classification given above applies. If the item IS part of a set or kit, the classification would change to the following: UN3316 Chemical Kit, Class 9, PG II or III. If the item is not regulated, the Chemical Kit classification d oes not apply. ______15. REGULATORY INFORMATION

Legend: NA - Not Applicable w/w - weight/weight ND - Not Determined w/v - weight/volume NV - Not Available v/v - volume/volume

USER RESPONSIBILITY: Each user should read and understand this information and incorporate it in individual site safety programs in accordance with applicable hazard communication standards and regulations.

THE INFORMATION CONTAINED HEREIN IS BASED ON DATA CONSIDERED TO BE ACCURATE. HOWEVER, NO WARRANTY IS EXPRESSED OR IMPLIED REGARDING THE ACCURACY OF THESE DATA OR THE RESULTS TO BE OBTAINED FROM THE USE THEREOF.

______1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

Product Name: Buffer Powder Pillows pH 7.00 ± 0.02 @ 25°C Catalog Number: 2227066

Hach Company Emergency Telephone Numbers: P.O.Box 389 (Medical and Transportation) Loveland, CO USA 80539 (303) 623 -5716 24 Hour Service (970) 669 -3050 (515)232 -2533 8am - 4pm CST

MSDS Number: M00112 Chemical Name: Not applicable CAS Number: Not applica ble Additional CAS No. (for hydrated forms): Not applicable Chemical Formula: Not applicable Chemical Family: Not applicable Intended Use: Laboratory Reagent Buffer ______2. HAZARDS IDENTIFICATION

GHS Classification: Hazard categories: Serious Eye Damage/Eye Irritation:Eye Irrit. 2 Skin Corrosion/Irritation: Skin Irrit. 2 . GHS Label Elements: WARNING

Hazard statements: Causes skin irritation. Causes serious eye irritation. . Precautionary statements: Wash thoroughly after handling. Wear eye protection. IF ON SKIN: Wash with plenty of soap and water. If skin irritation occurs: Get medical advice/attention. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical advice/attention. Take off contaminated clothing and wash before reuse. HMIS: Health: 1 Flammability: 0 Reactivity: 0 Protective Equipment: X - See protective equipment, Section 8. NFPA: Health: 2 Flammability: 0 Reactivity: 0 Symbol: Not applicable WHMIS Hazard Classification: Class D, Division 2, Subdivision B - Toxic material (other toxic effects) WHMIS Symbols: Other Toxic Effects ______3. COMPOSITION / INFORMATION ON INGREDIENTS

Hazardous Components according to GHS: Sodium Phsophate, Dibasic

CAS Number: 7558 -79 -4 Chemical Formula: Na 2HPO 4 GHS Classification: Skin Irrit. 2, H315; Eye Irrit. 2A, H319 Percent Range (Trade Secret): 50.0 - 60.0 Percent Range Units: weight / weight PEL: 15 mg/m 3 as inhalable dust; 5 mg/m 3 as respirable dust TLV: 10 mg/m 3 as inhalable dust; 3 mg/m 3 as respirable dust

WHMIS Symbols: Not applicable Potassium Phosphate, Monobasic

CAS Number: 7778 -77 -0 Chemical Formula: KH 2PO 4 GHS Classification: Acute Tox. 4 - Orl, H302; Eye Irrit. 2, H319 Percent Range (Trade Secret): 40.0 - 50.0 Percent Range Units: weight / weight PEL: 15 mg/m 3 as total dust; 5 mg/m 3 as respirable dust TLV: 10 mg/m 3 as inhalable fraction; 3 mg/m 3 as respirable fraction

WHMIS Symbols: Not applicable 2,4 -Dinitrophenol

CAS Number: 51 -28 -5 Chemical Formula: C6H4N2O5 GHS Classification: Acute Tox. 3 - Orl, H301; Acute Tox. 3 - Derm, H311; Acute Tox. 3 - Inh, H331; STOT RE 2, H373; Aquatic Acute 1, H400 Percent Range (Trade Secret): 0.01 - 0.1 Percen t Range Units: weight / weight PEL: Not established TLV: Not established

WHMIS Symbols: Acute PoisonFlammable / Combustible ______4. FIRST AID MEASURES

General Information: In the event of exposure, show this Material Safety Data Sheet and label (where possible) to a doctor. Advice to doctor: Treat symptomatically. Eye Contact: Immediately flush eyes with water for 15 minutes. Call physician. Skin Contact (First Aid): Remove contaminated clothing. Wash skin with soap and plenty of water. Call physician if irritation develops. Inhalation: Remove to fresh air. Ingestion (First Aid): Give large quantities of water. Call physician immediately. Never give anything by mouth to an unconscious person. ______5. FIRE FIGHTING MEASURES

Flammable Properties: During a fire, corrosive and toxic gases may be generated by thermal decomposit ion. Fire Fighting Instruction: As in any fire, wear self -contained breathing apparatus pressure -demand and full protective gear. Extinguishing Media: Use media appropriate to surrounding fire conditions Extinguishing Media NOT To Be Used: Not applicable Fire / Explosion Hazards: None reported Hazardous Combustion Products: Toxic fumes of: phosphorus oxides ______6. ACCIDENTAL RELEASE MEASURES

Handling: Avoid contact with eyes Do not breathe dust. Wash thoroughly after handling. Maintain general industrial hygiene practices when using this product. Storage: Store at 10 - 30°C. Protect from: heat moisture Flammability Class: Not applicable ______8. EXPOSURE CONTROLS / PERSONAL PROTECTION

Engineering Controls: Maintain general industrial hygiene practices when using this product. Personal Protective Equipment: Eye Protection: safety glasses with top and side shields Skin Protection: disposable latex gloves In the EU, the selected gloves must satisfy the specifications of EU Directive 89/686/EEC and standard EN 374 derived from it. lab coat Inhalation P rotection: adequate ventilation Precautionary Measures: Avoid contact with: eyes Do not breathe: dust Wash thoroughly after handling. Protect from: heat moisture TLV: Not established PEL: Not established For Occupational Exposure Limits (OEL) for ingredients, see section 3 - Composition/Information on Ingredients.: ______9. PHYSICAL AND CHEMICAL PROPERTIES

Appearance: Light yellow powder Physical State: Solid Molecular Weight: Not applicable Odor: Not determined Odor Threshold: Not determined pH: 15.8% solution = 7.0 Metal Corrosivity: Corrosivity Classification: Not classified as corrosive to metals according to GHS criteria. Steel: Not determined Aluminum: Not determined Specific Gravity/ Relative Density (water = 1; air =1): 2.40 Viscosity: Not determined Solubility: Water: Soluble Acid: Not determined Other: Insoluble in alcohol Partition Coefficient (n -octanol / wat er): Not applicable Coefficient of Water / Oil: Not applicable Melting Point: ~160° C (~320° F) Decomposition Temperature: Not determined Boiling Point: Not applicable Vapor Pressure: Not applicable Vapor Density (air = 1): Not applicable Evaporation Rate (water = 1): Not applicable Volatile Organic Compounds Content: Not applicable Flammable Properties: During a fire, corrosive and toxic gases may be generated by thermal decomposition. Flash Point: Not applicable Method: Not appli cable Flammability Limits: Lower Explosion Limits: Not applicable Upper Explosion Limits: Not applicable Autoignition Temperature: Not applicable Explosive Properties: Not classified according to GHS criteria. Oxidizing Properties: Not c lassified according to GHS criteria. Reactivity Properties: Not classifed as self -reactive, pyrophoric, self -heating or emitting flammable gases in contact with water according to GHS criteria. Gas under Pressure: Not classified according to GHS criteria. Not determined ______10. STABILITY AND REACTIVITY

Chemical Stability: Stable when stored under proper conditions. Mechanical Impact: None reported Static Discharge: None reported. Reactivity / Incompatibility: None reported Hazardous Decomposition: Heating to decomposition releases toxic and/or corrosive fumes of: phosphorus oxides Conditions to Avoid: Excess moisture Ex treme temperatures ______11. TOXICOLOGICAL INFORMATION

Product Ecological Information: -- No ecological data available for this product. Mobility in soil: No data available CEPA Categorization: Persistent Not Bioaccumulative Not inherently toxic to aquatic organi sms Ingredient Ecological Information: -- No ecological data available for the ingredients of this product. ______13. DISPOSAL CONSIDERATIONS

EPA Waste ID Number: Not appl icable Special Instructions (Disposal): Dilute to 3 to 5 times the volume with cold water. Open cold water tap completely, slowly pour the material to the drain. Allow cold water to run for 5 minutes to completely flush the system. Empty Containers : Rinse three times with an appropriate solvent. Dispose of empty container as normal trash. NOTICE (Disposal): These disposal guidelines are based on federal regulations and may be superseded by more stringent state or local requirements. Please c onsult your local environmental regulators for more information. In Europe: Chemical and analysis solutions must be disposed of in compliance with the respective national regulations. Product packaging must be disposed of in compliance with the country -specific regulations or must be passed to a packaging return system. ______14. TRANSPORT INFORMATION

D.O.T.: D.O.T. Proper Shipping Name: Not Currently Regulated -- Hazard Class: NA Subsidiary Risk: NA ID Number: NA Packing Group: NA T.D.G.: Proper Shipping Name: Not Currently Regulated -- Hazard Class: NA Subsidiary Risk: NA UN Number/PIN: NA Packing Group: NA I.C.A.O.: I.C.A.O. Proper Shipping Name: Not Currently Regulated -- Hazard Class: NA Subsidiary Risk: NA ID Number: NA Packing Group: NA I.M.O.: Proper Shipping Name: Not Currently Regulated -- Hazard Class: NA Subsidiary Risk: N A ID Number: NA Packing Group: NA Additional Information: There is a possibility that this product could be contained in a rea gent set or kit composed of various compatible dangerous goods. If the item is NOT in a set or kit, the classification given above applies. If the item IS part of a set or kit, the classification would change to the following: UN3316 Chemical Kit, Class 9 , PG II or III. If the item is not regulated, the Chemical Kit classification does not apply. ______15. REGULATORY INFORMATION

U.S. Federal Regulations: O.S.H.A.: This product meets the criteria for a hazardous substance as defined in the Hazard Communication Standard. (29 CFR 1910.1200) E.P.A.: S.A.R.A. Title III Section 311/312 Categorization (40 CFR 370): Immediate (Acute) Health Hazard S.A.R.A. Title III Section 313 ( 40 CFR 372): This product does NOT contain any chemical subject to the reporting requirements of Section 313 of Title III of SARA. -- 302 (EHS) TPQ (40 CFR 355): Not applicable 304 CERCLA RQ (40 CFR 302.4): Sodium Phosphate, Dibasic 5000 lbs. 304 EHS RQ (40 CFR 355): Not applicable Clean Water Act (40 CFR 116.4): Sodium phosphate, dibasic - RQ 5000 lbs. RCRA: Contains no RCRA regulated substances. State Regulations: California Prop. 65: No Prop. 65 listed chemicals are present in this product. Identification of Prop. 65 Ingredient(s): None California Perchlorate Rule CCR Title 22 Chap 33: Not applicable Trade Secret Registry: Not applicable National Inventories: U.S. Inventory Status: All ingredients in this product a re listed on the TSCA 8(b) Inventory (40 CFR 710). CAS Number: Not applicable Canadian Inventory Status: All ingredients of this product are DSL Listed. EEC Inventory Status: All ingredients used to make this product are listed on EINECS / ELINCS. Australian Inventory (AICS) Status: All ingredients are listed. New Zealand Inventory (NZIoC) Status: All components either listed or exempt. Korean Inventory (KECI) Status: All components of this product are either listed, listed as the anhydrou s compound or exempt. Japan (ENCS) Inventory Status: All components either listed or exempt. China (PRC) Inventory (MEP) Status: All components either listed or exempt. ______16 . OTHER INFORMATION

References: Air Contaminants, Federal Register, Vol. 54, No. 12. Thursday, January 19, 1989. pp. 2332 -2983. TLV's Threshold Limit Values and Biological Exposure Indices for 1992 -1993. American Conference of Governmental Industri al Hygienists, 1992. In -house information. Technical Judgment. Vendor Information. CCINFO RTECS. Canadian Centre for Occupational Health and Safety. Hamilton, Ontario Canada: 30 June 1993. Complete Text of H phrases referred to in Section 3: H30 2 Harmful if swallowed. H315 Causes skin irritation. H319 Causes serious eye irritation. Revision Summary: . Substantial revision to comply with EU Reg 1272/2008, Reg 1907/2006 and UN GHS ( ST/SG/AC.10/36/Add.3). Date of MSDS Preparation: Day: 29 Month: May Year: 2014 MSDS Prepared: MSDS prepared by Product Compliance Department extension 3350 CCOHS Evaluation Note: It is offered under exemption from WHMIS labeling as specified in the Controlled Products Regulation (CPR) Section 17. I t is offered under the interim policy that was established by Health Canada permitting use of GHS -formatted safety data sheets in Canada prior to revision of CPR to GHS. This product has been classified and labeled in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). This SDS has been prepared in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). ______

Legend: NA - Not Applicable w/w - weight/weight ND - Not Determined w/v - weight/volume NV - Not Available v/v - volume/volume

USER RESPONSIBILITY: Each user should read and understand this information and incorporate it in individual site safety programs in accordance with applicable hazard communication standards and regulations.

THE INFORMATION CONTAINED HEREIN IS BASED ON DATA CONSIDERED TO BE ACCURATE. HOWEVER, NO WA RRANTY IS EXPRESSED OR IMPLIED REGARDING THE ACCURACY OF THESE DATA OR THE RESULTS TO BE OBTAINED FROM THE USE THEREOF.

______1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

Product Name: Mehlich 2 Soil Extractant Concentrate Catalog Number: 2266349

Hach Company Emergency Telephone N umbers: P.O.Box 389 (Medical and Transportation) Loveland, CO USA 80539 (303) 623 -5716 24 Hour Service (970) 669 -3050 (515)232 -2533 8am - 4pm CST

MSDS Number: M00998 Chemical Name: Not applicable CAS Number: Not applicable Additional CAS No. (for hydrated forms): Not applicable Chemical Formula: Not applicable Chemical Family: Not applicable Intended Use: Soil Testing ______2. HAZARDS IDENTIFIC ATION

GHS Classification: Hazard categories: Corrosive to Metals: Met. Corr. 1 Acute Toxicity: Acute Tox. 4 -Orl Acute Toxicity: Acute Tox. 4 - Derm Skin Corrosion/Irritation: Skin Corr. 1A . GHS Label Elements: DANGER

Hazard statements: May be corrosive to metals. Harmful if swallowed. Harmful in contact with skin. Causes severe skin burns and eye damage. . Precautionary statements: Do not breathe dust/fume/gas/mis t/vapours/spray. Do no eat, drink or smoke when using this product. Wear protective gloves / protective clothing / eye protection / face protection. IF INHALED: Remove victim/person to fresh air and keep at rest in a position comfortable for breathing. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF SWALLOWED: rin se mouth. Do NOT induce vomiting. Immediately call a POISON CENTER or doctor/physician. HMIS: Health: 3 Flammability: 0 Reactivity: 0 Protective Equipment: X - See protective equipment, Section 8. NFPA: Health: 2 Flammability: 0 Reactivity : 0 Symbol: Not applicable WHMIS Hazard Classification: Class D, Division 2, Subdivision B - Toxic material (other toxic effects) Class E - Corrosive material WHMIS Symbols: Corrosive Other Toxic Effects ______3. COMPOSITION / INFORMATION ON INGREDIENTS

Hazardous Components according to GHS: Acetic Acid

CAS Number: 64 -19 -7 Chemical Formula: C2H4O2 GHS Classification: Flam. Liq 3, H226; Skin Corr. 1A, H314 Percent Range (Trade Secret): 5.0 - 15.0 Percent Range Units: weight / weight PEL: 10 ppm (25 mg/m 3) TLV: 10 ppm (25 mg/m 3)

WHMIS Symbols: CorrosiveFlammable / Combustible Ammonium Chloride

CAS Number: 12125 -02 -9 Chemical Formula: NH 4Cl GHS Clas sification: Acute Tox. 4 -Orl, H302; Skin Irrit. 3, H316; Eye Irrit. 2A, H319; Aq. Acute 2, H401 Percent Range (Trade Secret): 5.0 - 15.0 Percent Range Units: weight / weight PEL: 15 mg/m3 as inhalable dust; 5 mg/m3 as respirable dust TLV: 10 mg/m³

WHMIS Symbols: Other Toxic Effects Hydrofluoric Acid, ACS

CAS Number: 7664 -39 -3 Chemical Formula: HF GHS Classification: Met. Corr. 1, H290; Acute Tox. 2 – Orl, H300; Acute Tox. 1 – Derm, H310; Skin Corr. 1A, H314; Acute Tox. 2 – Inh, H330; STOT Sing le 1, H370; Aquatic Acute 3, H402 Percent Range (Trade Secret): < 0.5 Percent Range Units: weight / weight PEL: 3 ppm TLV: 0.5 ppm as Fluorine; Ceiling: 2 ppm as Fluorine

WHMIS Symbols: CorrosiveAcute PoisonDangerously Reactive Material Ammonium flu oride

CAS Number: 12125 -01 -8 Chemical Formula: NH 4F GHS Classification: Acute Tox. Orl. 3, H301; Acute Tox. Derm. 5, H313; Acute Tox. Inh. 3, H331; Skin Corr. 1C, H314; STOT Single 3, H335; STOT Rep. 2, H373; Aquatic Chronic 3, H412 Percent Range (Tra de Secret): <0.2 Percent Range Units: weight / weight PEL: 2.5 mg/m 3 as F TLV: 2.5 mg/m 3 as F

WHMIS Symbols: CorrosiveAcute Poison Hazardous Components according to GHS: No Demineralized Water

CAS Number: 7732 -18 -5 Chemical Formula: H2O GHS Classification: Not a dangerous substance according to GHS. Percent Range (Trade Secret): 70.0 - 80.0 Percent Range Units: weight / weight PEL: Not established TLV: Not established

WHMIS Symbols: Not applicable ______4. FIRST AID MEASURES

General Information: In the event of exposure, show this Material Safety Data Sheet and label (where possible) to a doctor. Advice to doctor: Treat symptomatically. Eye Contact: Immediately flush eyes with water for 15 minutes. Call physician. Skin Contact (First Aid): Wash skin with soap and plenty of water. Call physician immediately. Inhalation: Remove to fresh air. Ingestion (First Aid): Do not induce vomiting. Give 1 -2 glasses of water. Call physician immediately. Never give anything by mouth to an unconscious person. ______5. FIRE FIGHTING MEASURES

Flammable Properties: Material wi ll not burn. Fire Fighting Instruction: As in any fire, wear self -contained breathing apparatus pressure -demand and full protective gear. Extinguishing Media: Use media appropriate to surrounding fire conditions Extinguishing Media NOT To Be Used : Not applicable Fire / Explosion Hazards: This product will not burn or explode. Hazardous Combustion Products: This material will not burn. ______6. ACCIDENTAL RELEASE MEASURES

Handling: Avoid contact with eyes skin clothing Do not breathe mist or vapors. Wash thoroughly after handling. Maintain general industrial hygiene practices when using this product. Storage: Store away from: alkalies Keep container tightly closed when not in use. Flammability Class: Not applicable ______8. EXPOSURE CONTROLS / PERSONAL PROTECTION

Engineering Controls: Have an eyewash station nearby. Have a safety shower nearby. Maintain general industrial hygiene practices when using this product. Personal Protective Equipment: Eye Protection: safety glasses with top and side shields Skin Protection: disposable latex gloves lab coat Inhalation Protection: laboratory fume hood Precautionary Measures: Avoid contact with: eyes skin clothing Do not breathe: mist/vapor Wash thoroughly after handling. Keep away from: alkalies alkali metals TLV: Not established PEL: Not established For Occupational Exposure Limits (OEL) for ingredients, see section 3 - Composition/Information on Ingredients.: ______9. PHYSICAL AND CHEMICAL PROPERTIES

Appearance: Clear, colorless liquid Physical State: Liquid Molecular Weight: Not applicable Odor: Vinegar Odor Threshold: Acetic Acid: 0.48 - 1.0 ppm pH: 2.58 Metal Corrosivity: Corrosivity Classification: Classified as corrosive to metals. Steel: 0.399 in/yr Aluminum: 6.10 in/yr Specific Gravity/ Relative Density (water = 1; air =1): 1.037 Viscosity: Not determined Solubility: Water: Miscible Acid: Miscible Other: Not determined Partition Coefficient (n -octanol / water): Not applicable Coefficient of Water / Oil: Not applicable Melting Point: Estima tion: -22 °C ( -7 °F) Decomposition Temperature: Not determined Boiling Point: Estimation: 106 °C (223 °F) Vapor Pressure: Estimation: 15.37 mm Hg (2.00 kPa) at 20 °C (68 °F) Vapor Density (air = 1): Estimation: 0.66 at 20 °C (68 °F) Evaporation R ate (water = 1): Estimation: 0.82 at 20 °C (68 °F) Volatile Organic Compounds Content: None Flammable Properties: Material will not burn. Flash Point: Not applicable Method: Not applicable Flammability Limits: Lower Explosion Limits: Not applicable Upper Explosion Limits: Not applicable Autoignition Temperature: Not applicable Explosive Properties: Not classified according to GHS criteria. Oxidizing Properties: Not classified according to GHS criteria. Reactivity Prop erties: Not classifed as self -reactive, pyrophoric, self -heating or emitting flammable gases in contact with water according to GHS criteria. Gas under Pressure: Not classified according to GHS criteria. ______10. STABILITY AND REACTIVITY

Chemical Stability: Stable when stored under proper conditions. Mechanical Impact: None reported Static Discharge: None reported. Reactivity / Incompatibility: Incompatible with: strong bases oxidizers Hazardous Decomposition: Toxic fumes of: carbon dioxide carbon monoxide Conditions to Avoid: Evaporation Extreme temperatures ______11. TOXICOLOGICAL INFORMATION

Toxicokinetics, Metabolism and Distribution: No information available for mixture. Toxicologically Synergistic Products: None reported Acute Toxicity: Acute Toxicity Estimate (ATE) - Calculated from Ingredient Toxicity Data Route Data Given Below Oral Rat LD50 = 1757 mg/kg Dermal Rabbit LD50 = 1732 mg/kg Specific Target Organ Toxicity - Single Exposure (STOT -SE): Based on classification prin ciples, the classification criteria are not met. Specific Target Organ Toxicity - Repeat Exposure (STOT -RE): Based on classification principles, the classification criteria are not met. Skin Corrosion/Irritation: Corrosive to skin. Eye Damage: Corrosive to eyes. Sensitization: Based on classification principles, the classification criteria are not met. CMR Effects/Properties (carcinogenic, mutagenic or toxic to reproduction): Based on classification principles, the classification criter ia are not met. An ingredient of this mixture is: IARC Group 3: Non -classifiable Hydrofluoric Acid Hydrochloric acid This product does NOT contain any NTP listed chemicals. This product does NOT contain any OSHA listed carcinogens. Symptoms/Effects: Ingestion: Harmful Causes: abdominal pain burns of the mouth and esophagus May cause: nausea vomiting Inhalation: Harmful Causes: respiratory tract irritation Can cause: sore throat coughing lung congestion Skin Abso rption: Harmful if absorbed through the skin The fluoride ion readily penetrates the skin causing destruction of deep tissue layers and evn bone. Chronic Effects: Chronic overexposure may cause weight loss anemia Medical Conditions Aggravated: Pre -existing: Eye conditions Skin conditions Respiratory conditions ______12. ECOLOGICAL INFORMATION

Product Ecological Information: -- No ecological data available for th is product. Ingredient Ecological Information: -- No ecological data available for the ingredients of this product. CEPA Statement: Acetic Acid: Bioaccumulative and inherently toxic to aquatic organisms, not persistent. CEPA Statement: Ammonium Chloride, Ammonium Fluoride: Persistent and inherently toxic to aquatic organisms, not bioaccumulative. CEPA Statement: Hyd rochloric Acid, Hydrofluoric Acid, Water: Persistent, not bioaccumulative or inherently toxic to aquatic organisms. ______13. DISPOSAL CONSIDERATIONS

EPA Waste ID Number: D002 Special Instructions (Disposal): Dilute to 3 to 5 times the volume with cold water. Adjust to a pH between 6 and 9 with an alkali, such as soda ash or sodium bicarbonate. Open cold water tap completely, slowly pour the reacted material to the drain. Empty Containers: Rinse three times with an appropriate solvent. Dispose of empty container as normal trash. NOTICE (Disposal): These disposal guidelines are based on federal regulations and may be superseded by more stringent state or local require ments. Please consult your local environmental regulators for more information. In Europe: Chemical and analysis solutions must be disposed of in compliance with the respective national regulations. Product packaging must be disposed of in compliance w ith the country -specific regulations or must be passed to a packaging return system. ______14. TRANSPORT INFORMATION

D.O.T.: D.O.T. Proper Shipping Name: Corrosive Liquid, N.O.S . (Acetic Acid/Hydrofluoric Acid Mixture) Hazard Class: 8 Subsidiary Risk: NA ID Number: UN1760 Packing Group: II T.D.G.: Proper Shipping Name: Corrosive Liquid, N.O.S. (Acetic Acid/Hydrofluoric Acid Mixture) Hazard Class: 8 Subsidiary Risk: NA UN Number/PIN: 1760 Packing Group: II I.C.A.O.: I.C.A.O. Proper Shipping Name: Corrosive Liquid, N.O.S. (Acetic Acid/Hydrofluoric Acid Mixture) Hazard Class: 8 Subsidiary Risk: NA ID Number: UN1760 Packing Group: II I.M.O.: Proper Shipping Name: Corrosive Liquid, N.O.S. (Acetic Acid/Hydrofluoric Acid Mixture) Hazard Class: 8 Subsidiary Risk: NA ID Number: UN1760 Packing Group: II Additional Information: There is a possib ility that this product could be contained in a reagent set or kit composed of various compatible dangerous goods. If the item is NOT in a set or kit, the classification given above applies. If the item IS part of a set or kit, the classification would ch ange to the following: UN3316 Chemical Kit, Class 9, PG II or III. If the item is not regulated, the Chemical Kit classification does not apply. ______15. REGULATORY INFORMATION

U.S. Federal Regulations: O.S.H.A.: This product meets the criteria for a hazardous substance as defined in the Hazard Communication Standard. (29 CFR 1910.1200) E.P.A.: S.A.R.A. Title III Section 311/312 Categorization (40 CFR 370): Immediate (Acut e) Health Hazard S.A.R.A. Title III Section 313 (40 CFR 372): This product contains a chemical(s) subject to the reporting requirements of Section 313 of Title III of SARA. Ammonium Chloride 302 (EHS) TPQ (40 CFR 355): Hydrofluoric Acid 100 lbs . 304 CERCLA RQ (40 CFR 302.4): Acetic acid Ammonium chloride: Hydrochloric Acid (each) = 5000 lbs. Hydrofluoric acid 100 lbs. 304 EHS RQ (40 CFR 355): Not applicable Clean Water Act (40 CFR 116.4): Acetic acid - RQ 5000 lbs. Ammonium chloride - RQ 5000 lbs. Hydrochloric Acid - RQ 5000 lbs. Hydrofluoric acid - RQ 100 lbs. RCRA: Contains RCRA regulated substances. See Section 13, EPA Waste ID Number. State Regulations: California Prop. 65: No Prop. 65 listed chemicals are present in this product. Identification of Prop. 65 Ingredient(s): Not applicable California Perchlorate Rule CCR Title 22 Chap 33: Not applicable Trade Secret Registry: Not applicable National Inventories: U.S. Inventory Status: All ingredients in this product are listed on the TSCA 8(b) Inventory (40 CFR 710). CAS Number: Not applicable Canadian Inventory Status: All ingredients of this product are DSL Listed. EEC Inventory Status: All ingredients used to make this product are listed on EINECS / ELINCS. Australian Inventory (AICS) Status: All ingredients are listed. New Zealand Inventory (NZIoC) Status: All components either listed or exempt. Korean Inventory (KECI) Status: All components of th is product are either listed, listed as the anhydrous compound or exempt. Japan (ENCS) Inventory Status: All components either listed or exempt. China (PRC) Inventory (MEP) Status: All components either listed or exempt. ______16. OTHER INFORMATION

References: 29 CFR 1900 - 1910 (Code of Federal Regulations - Labor). Air Contaminants, Federal Register, Vol. 54, No. 12. Thursday, January 19, 1989. pp. 2332 -2983. TLV's Thre shold Limit Values and Biological Exposure Indices for 1992 -1993. American Conference of Governmental Industrial Hygienists, 1992. Technical Judgment. In -house information. Fire Protection Guide on Hazardous Materials, 10th Ed. Quincy, MA: National F ire Protection Fire Protection Guide on Hazardous Materials, 10th Ed. Quincy, MA: National Fire Protection Association, 1991. Complete Text of H phrases referred to in Section 3: H226 Flammable liquid and vapour. H300 Fatal if swallowed. H302 Harmf ul if swallowed. H310 Fatal in contact with skin. H314 Causes severe skin burns and eye damage. H319 Causes serious eye irritation. H330 Fatal if inhaled. H335 May cause respiratory irritation. Revision Summary: . Substantial revision to comply w ith EU Reg 1272/2008, Reg 1907/2006 and UN GHS ( ST/SG/AC.10/36/Add.3). Date of MSDS Preparation: Day: 18 Month: June Year: 2014 MSDS Prepared: MSDS prepared by Product Compliance Department extension 3350 CCOHS Evaluation Note: It is offered under exemption from WHMIS labeling as specified in the Controlled Products Regulation (CPR) Section 17. It is offered under the interim policy that was established by Health Canada permitting use of GHS -formatted safety data sheets in Ca nada prior to revision of CPR to GHS. This product has been classified and labeled in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). This SDS has been prepared in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). ______

Legend: NA - Not Applicable w/w - weight/weight ND - Not Determined w/v - weight/volume NV - Not Available v/v - volume/volume

USER RESPONSIBILITY: Each user should read and u nderstand this information and incorporate it in individual site safety programs in accordance with applicable hazard communication standards and regulations.

THE INFORMATION CONTAINED HEREIN IS BASED ON DATA CONSIDERED TO BE ACCURATE. HOWEVER, NO WARRANT Y IS EXPRESSED OR IMPLIED REGARDING THE ACCURACY OF THESE DATA OR THE RESULTS TO BE OBTAINED FROM THE USE THEREOF.

______1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

Product Name: Alkaline EDTA Solution Catalog Number: 2268732

Hach Company Emergency Telephone Numbers: P.O.Box 389 (Medical and Transportation) Loveland, CO USA 80539 (303) 623 -5716 24 Hour Service (970) 669 -3050 (515)232 -2533 8am - 4pm CST

MSDS Number: M00690 Chemical Name: Not applicable CAS Number: Not applicable Additional CAS No. (for hydrated forms): Not app licable Chemical Formula: Not applicable Chemical Family: Not applicable Intended Use: Laboratory Reagent Determination of potassium ______2. HAZARDS IDENTIFICATION

GHS Clas sification: Hazard categories: . Skin Corrosion/Irritation: Skin Corr. 1A GHS Label Elements: DANGER

Hazard statements: . Causes severe skin burns and eye damage. Precautionary statements: Wash thoroughly after handling. Wear protective gloves / protective clothing / eye protection / face protection. IF SWALLOWED: rinse mouth. Do NOT induce vomiting. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if pr esent and easy to do. Continue rinsing. HMIS: Health: 3 Flammability: 0 Reactivity: 0 Protective Equipment: X - See protective equipment, Section 8. NFPA: Health: 3 Flammability: 0 Reactivity: 0 Symbol: Not applicable WHMIS Hazard Class ification: Class E - Corrosive material WHMIS Symbols: Corrosive ______3. COMPOSITION / INFORMATION ON INGREDIENTS

Hazardous Components according to GHS: Lithium Hydroxide CAS Number: 1310 -65 -2 . Chemical Formula: LiOH H 2O GHS Classification: Met. Corr. 1, H290; Acute Tox. 3 -Orl., H301; Skin Corr. 1A, H314; Acute Tox. 3 - Inh, H331 Percent Range (Trade Secret): 1.0 - 10.0 Percent Range Units: weight / volume PEL: 15 mg/m 3 as inhalable dust; 5 mg/m 3 as respirable dust TLV: 10 mg/m 3 as inhalable dust; 3 mg/m 3 as respirable dust

WHMIS Symbols: CorrosiveAcute Poison EDTA Tetrasodium Salt

CAS Number: 64 -02 -8 Chemical Formula: C10 H12 N2Na 4O8 2H 2O GHS Classificatio n: Acute Tox. 4 -Orl, H302; Eye Dam. 1, H318 Percent Range (Trade Secret): 1.0 - 5.0 Percent Range Units: weight / volume PEL: 15 mg/m 3 as total dust; 5 mg/m 3 as respirable dust TLV: 10 mg/m 3 as inhalable dust; 3 mg/m 3 as respirable dust

WHMIS Symbol s: Other Toxic Effects Hazardous Components according to GHS: No Demineralized Water

CAS Number: 7732 -18 -5 Chemical Formula: H2O GHS Classification: Not a dangerous substance according to GHS. Percent Range (Trade Secret): 90.0 - 100.0 Percent Ra nge Units: volume / volume PEL: Not established TLV: Not established

WHMIS Symbols: Not applicable ______4. FIRST AID MEASURES

General Information: In the event of exposure, show this Material Safety Data Sheet and label (where possible) to a doctor. Advice to doctor: Treat symptomatically. Eye Contact: Immediately flush eyes with water for 15 minutes. Call physician. Skin Contact (First Aid): Wash skin with plenty of water for 15 minutes. Remove contaminated clothing. Call physician immediately. Inhalation: Remove to fresh air. Give artificial respiration if necessary. Call physician. Ingestion (First Aid): Do not induce vomiting. Give 1 -2 glasses of water. Call physician immediately. Never give anything by mouth to an unconscious person. ______5. FIRE FIGHTING MEASURES

Flammable Properties: Material will not burn. Fire Fighting Instruction: As in any fire, wear self -contained breathing apparatus pressure -demand and full protective gear. Extinguishing Media: Use media appropriate to surrounding fire conditions Extinguishing Media NOT To Be Used: Not appli cable Fire / Explosion Hazards: None reported Hazardous Combustion Products: This material will not burn. ______6. ACCIDENTAL RELEASE MEASURES

Handling: Avoid contact with eyes skin clothing Do not breathe mist or vapors. Wash thoroughly after handling. Maintain general industrial hygiene practices when using this product. Storage: Keep container tightly closed when not in use. Flammability Class: Not applicable ______8. EXPOSURE CONTROLS / PERSONAL PROTECTION

Engineering Controls: Have an eyewash station nearby. Have a safety shower nearby. Use general ventilation to minimize exposure to mist, vapor or dust. Maintain general industrial hygiene practices when using this product. Personal Protective Equipmen t: Eye Protection: chemical splash goggles Skin Protection: disposable latex gloves Inhalation Protection: adequate ventilation Precautionary Measures: Avoid contact with: eyes skin clothing Do not breathe: mist/vapor Wash thoroughly after han dling. TLV: Not established PEL: Not established For Occupational Exposure Limits (OEL) for ingredients, see section 3 - Composition/Information on Ingredients.: ______9. PHYSIC AL AND CHEMICAL PROPERTIES

Appearance: Clear, colorless liquid Physical State: Liquid Molecular Weight: Not applicable Odor: None Odor Threshold: Not applicable pH: 12.82 Metal Corrosivity: Corrosivity Classification: Classed as corrosive to skin. Not generally classed as corrosive to metals in addition to skin classification. Steel: 0.197 in/yr Aluminum: <0.001 in/yr Specific Gravity/ Relative Density (water = 1; air =1): 1.052 Viscosity: Not determined Solubility: Water: Soluble Acid: Soluble Other: Not determined Partition Coefficient (n -octanol / water): Not applicable Coefficient of Water / Oil: Not applicable Melting Point: Not determined Decomposition Temperature: Not determined Boil ing Point: ~100° C (~212° F) Vapor Pressure: Not determined Vapor Density (air = 1): Not determined Evaporation Rate (water = 1): 0.781 Volatile Organic Compounds Content: Not applicable Flammable Properties: Material will not burn. Flash Poin t: Not applicable Method: Not applicable Flammability Limits: Lower Explosion Limits: Not applicable Upper Explosion Limits: Not applicable Autoignition Temperature: Not applicable Explosive Properties: Not classified according to GHS criteria . Oxidizing Properties: Not classified according to GHS criteria. Reactivity Properties: Not classifed as self -reactive, pyrophoric, self -heating or emitting flammable gases in contact with water according to GHS criteria. Gas under Pressure: Not classified according to GHS criteria. Not applicable ______10. STABILITY AND REACTIVITY

Chemical Stability: Stable when stored under proper conditions. Mechanical Impact: None reported Static Discharge: None reported. Reactivity / Incompatibility: Incompatible with: potassium ammonium acids oxidizers Hazardous Decomposition: None reported Conditions to Avoid: Heating to decomposition. ______11. TOXICOLOGICAL INFORMATION

Toxicokinetics, Metabolism and Distribution: No information available for mixture. Toxicologically Synergistic Products: None reported Acute Toxicity: Acute Toxicity E stimate (ATE) - Calculated from Ingredient Toxicity Data ATE Oral Rat LD50 = 2615 mg/kg Specific Target Organ Toxicity - Single Exposure (STOT -SE): Based on classification principles, the classification criteria are not met. Specific Target Organ To xicity - Repeat Exposure (STOT -RE): Based on classification principles, the classification criteria are not met. Skin Corrosion/Irritation: Corrosive to skin. Eye Damage: Corrosive to eyes. Sensitization: Based on classification principles, the class ification criteria are not met. CMR Effects/Properties (carcinogenic, mutagenic or toxic to reproduction): No germ cell mutagenicity, carcinogenicity or reproductive toxicity data found. This product does NOT contain any IARC listed chemicals. This product does NOT contain any NTP listed chemicals. This product does NOT contain any OSHA listed carcinogens. Symptoms/Effects: Ingestion: Causes: severe burns May cause: central nervous system effects kidney damage liver damage coma deat h Inhalation: Causes: severe burns May cause: shortness of breath coughing Skin Absorption: None Reported Chronic Effects: Lithium compounds have been implicated in development of aplastic anemia. Signs of lithium poisoning include dehydration, extreme weight loss, fine tremor of hands, nausea, vomiting and diarrhea, Chronic overexposure may cause central nervous system eff ects kidney damage liver damage Medical Conditions Aggravated: Pre -existing: Respiratory conditions Skin conditions Eye conditions ______12. ECOLOGICAL INFORMATION

Product E cological Information: -- No ecological data available for this product. Ingredient Ecological Information: EDTA: BOD 0.02 g/g, COD 0.54 g/g, Fish toxicity: Bluegill LC50 = 410 mg/l for 96 hours CEPA Statement: Lithium Hydroxide: Persistent and in herently toxic to aquatic organisms, not bioaccumultive. CEPA Statement: EDTA Tetrasodium Salt: Not persistent, bioaccumultive or inherently toxic to aquatic orgnisms. ______13. DISP OSAL CONSIDERATIONS

EPA Waste ID Number: D002 Special Instructions (Disposal): Dilute to 3 to 5 times the volume with cold water. Adjust to a pH between 6 and 9 with an acid, such as sulfuric or citric. Open cold water tap completely, slowly pour the reacted material to the drain. Allow cold water to run for 5 minutes to completely flush the system. Empty Containers: Rinse three times with an appropriate solvent. Dispose of empty container as normal trash. NOTICE (Disposal): These disposal guide lines are based on federal regulations and may be superseded by more stringent state or local requirements. Please consult your local environmental regulators for more information. In Europe: Chemical and analysis solutions must be disposed of in compli ance with the respective national regulations. Product packaging must be disposed of in compliance with the country -specific regulations or must be passed to a packaging return system. ______14. TRANSPORT INFORMATION

D.O.T.: D.O.T. Proper Shipping Name: Lithium Hydroxide, Solution -- Hazard Class: 8 Subsidiary Risk: NA ID Number: UN2679 Packing Group: II T.D.G.: Proper Shipping Name: Lithium Hydroxide Solution -- Hazard Class: 8 Subsidiary Risk: NA UN Number/PIN: 2679 Packing Group: II I.C.A.O.: I.C.A.O. Proper Shipping Name: Lithium Hydroxide Solution -- Hazard Class: 8 Subsidiary Risk: NA ID Number: UN2679 Packing Group: II I.M.O.: Pro per Shipping Name: Lithium Hydroxide, Solution -- Hazard Class: 8 Subsidiary Risk: NA ID Number: UN2679 Packing Group: II Marine Pollutant: Additional Information: There is a possibility that this product cou ld be contained in a reagent set or kit composed of various compatible dangerous goods. If the item is NOT in a set or kit, the classification given above applies. If the item IS part of a set or kit, the classification would change to the following: UN33 16 Chemical Kit, Class 9, PG II or III. If the item is not regulated, the Chemical Kit classification does not apply. ______15. REGULATORY INFORMATION

U.S. Federal Regulations: O.S.H.A.: This product meets the criteria for a hazardous substance as defined in the Hazard Communication Standard. (29 CFR 1910.1200) E.P.A.: S.A.R.A. Title III Section 311/312 Categorization (40 CFR 370): Immediate (Acute) Health Hazard S.A.R.A. Title III Section 313 (40 CFR 372): This product does NOT contain any chemical subject to the reporting requirements of Section 313 of Title III of SARA. -- 302 (EHS) TPQ (40 CFR 355): Not applicable 304 CERCLA RQ (40 CFR 302.4): Not applic able 304 EHS RQ (40 CFR 355): Not applicable Clean Water Act (40 CFR 116.4): Not applicable RCRA: Contains RCRA regulated substances. See Section 13, EPA Waste ID Number. State Regulations: California Prop. 65: No Prop. 65 listed chemicals are pr esent in this product. Identification of Prop. 65 Ingredient(s): None California Perchlorate Rule CCR Title 22 Chap 33: Not applicable Trade Secret Registry: Not applicable National Inventories: U.S. Inventory Status: All ingredients in this produ ct are listed on the TSCA 8(b) Inventory (40 CFR 710). CAS Number: Not applicable Canadian Inventory Status: All ingredients of this product are DSL Listed. EEC Inventory Status: All ingredients used to make this product are listed on EINECS / ELINCS. Australian Inventory (AICS) Status: All ingredients are listed. New Zealand Inventory (NZIoC) Status: All components either listed or exempt. Korean Inventory (KECI) Status: All components of this product are either listed, listed as the anhydrous compound or exempt. Japan (ENCS) Inventory Status: All components either listed or exempt. China (PRC) Inventory (MEP) Status: All components either listed or exempt. ______16. OTHER INFORMATION

References: Air Contaminants, Federal Register, Vol. 54, No. 12. Thursday, January 19, 1989. pp. 2332 -2983. TLV's Threshold Limit Values and Biological Exposure Indices for 1992 -1993. American Conference of Governmental Industrial Hygienists, 1992. Technical Judgment. In -house information. Complete Text of H phrases referred to in Section 3: H301 Toxic if swallowed. H302 Harmful if swallowed. H314 Causes s evere skin burns and eye damage. H318 Causes serious eye damage. Revision Summary: . Substantial revision to comply with EU Reg 1272/2008, Reg 1907/2006 and UN GHS ( ST/SG/AC.10/36/Add.3). Date of MSDS Preparation: Day: 24 Month: May Year: 2015 MSDS Prepared: MSDS prepared by Product Compliance Department extension 3350 CCOHS Evaluation Note: It is offered under exemption from WHMIS labeling as specified in the Controlled Products Regulation (CPR) Section 17. It is offered under the interi m policy that was established by Health Canada permitting use of GHS -formatted safety data sheets in Canada prior to revision of CPR to GHS. This product has been classified and labeled in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). T his SDS has been prepared in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). ______

Legend: NA - Not Applicable w/w - weight/weight ND - Not Determined w/v - weight/v olume NV - Not Available v/v - volume/volume

USER RESPONSIBILITY: Each user should read and understand this information and incorporate it in individual site safety programs in accordance with applicable hazard communication standards and regulations.

THE INFORMATION CONTAINED HEREIN IS BASED ON DATA CONSIDERED TO BE ACCURATE. HOWEVER, NO WARRANTY IS EXPRESSED OR IMPLIED REGARDING THE ACCURACY OF THESE DATA OR THE RESULTS TO BE OBTAINED FROM THE USE THEREOF.

______1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

Product Name: Nitrate Nitrogen Standard Solution Catalog Number: 2415132

Hach Company Emergency Telephone Numbers: P.O.Box 389 (Medical and Transportation) Loveland, CO USA 80539 (303) 623 -5716 24 Hour Service (970) 669 -3050 (515)232 -2533 8am - 4pm CST

MSDS Number: M00757 Chemical Name: Not applicable CAS Number: Not applicable Additional CAS No. (for hydrated forms): Not applicable Chemical Formula: Not applicable Chemical Family: Not applicable Intended Use: Laboratory Reagent Standard solution ______2. HAZARDS IDENTIFICATION

This mixture is not classified as hazardous per GHS (UN publication ST/SG/AC.10/36/Add.3) GHS Classification: Hazard categories: Not applicabl e GHS Label Elements: Not applicable

Hazard statements: Not applicable Precautionary statements: Not applicable HMIS: Health: 0 Flammability: 0 Reactivity: 0 Protective Equipment: X - See protective equipment, Section 8. NFPA: Heal th: 0 Flammability: 0 Reactivity: 0 Symbol: Not applicable WHMIS Hazard Classification: Not applicable WHMIS Symbols: Not applicable ______3. COMPOSIT ION / INFORMATION ON INGREDIENTS

Hazardous Components according to GHS: Potassium Nitrate

CAS Number: 7757 -79 -1 Chemical Formula: KNO 3 GHS Classification: Ox. Sol. 3, H272; Acute Tox. 5 -Orl, H303; Skin Irrit. 2, H315; Eye Irrit. 2A, H319; STOT Si ngle 3, H335; Aq. Acute 3, H402 Percent Range (Trade Secret): < 0.1 Percent Range Units: weight / volume PEL: 15 mg/m 3 as inhalable dust; 5 mg/m 3 as respirable dust TLV: 10 mg/m 3 as inhalable dust; 3 mg/m 3 as respirable dust

WHMIS Symbols: Oxidizing Chloroform, ACS

CAS Number: 67 -66 -3 Chemical Formula: CHCl 3 GHS Classification: Acute Tox. 4 -Orl, H302; Skin Irrit. 2, H315; Eye Irrit. 2A, H319; Acute Tox. 4 -Inh, H332; STOT Single 3, H336; Muta. 2, H341; Carc. 2, H351; Repr. 2, H361; STOT Rep. 2, H373; Aquatic Acute 3, H402 Percent Range (Trade Secret): < 0.01 Percent Range Units: volume / volume PEL: Ceiling: 50 ppm (240 mg/m³) TLV: 10 ppm (49 mg/m³)

WHMIS Symbols: Other Toxic Effects Hazardous Components according to GHS: No Demineralized Water

CAS Number: 7732 -18 -5 Chemical Formula: H2O GHS Classification: Not a dangerous substance according to GHS. Percent Range (Trade Secret): > 99.0 Percent Range Units: volume / volume PEL: Not established TLV: Not established

WHMIS Symbols: Not applicable ______4. FIRST AID MEASURES

General Information: In the event of exposure, show this Material Safety Data Sheet and label (where possible) to a doctor . Advice to doctor: Treat symptomatically. Eye Contact: Flush eyes with water. Call physician if irritation develops. Skin Contact (First Aid): Remove contaminated clothing. Wash skin with plenty of water. Inhalation: Remove to fresh air. Ingestion (First Aid): Give large quantities of water. Never give anything by mouth to an unconscious person. Call physician immediately. ______5. FIRE FIGHTING MEASURES

Flammable Properties: Material will not burn. Fire Fighting Instruction: As in any fire, wear self -contained breathing apparatus pressure -demand and full protective gear. Evacuate area and fight fire from a safe distance. Extinguishing Media: Us e media appropriate to surrounding fire conditions Extinguishing Media NOT To Be Used: Not applicable Fire / Explosion Hazards: None reported Hazardous Combustion Products: This material will not burn. ______6. ACCIDENTAL RELEASE MEASURES

Handling: Avoid contact with eyes Wash thoroughly after handling. Maintain general industrial hygiene practices when using thi s product. Storage: Keep container tightly closed when not in use. Flammability Class: Not applicable ______8. EXPOSURE CONTROLS / PERSONAL PROTECTION

Engineering Controls: Maintain general industrial hygiene practices when using this product. Personal Protective Equipment: Eye Protection: safety glasses with top and side shields Skin Protection: disposable latex gloves Inhalation Protection: adequate ventilation Precautionary Measures: Avoid contact with: eyes Wash thoroughly after handling. TLV: Not established PEL: Not established For Occupational Exposure Limits (OEL) for ingredients, see section 3 - Composition/Information on Ingredients.: ______9. PHYSICAL AND CHEMICAL PROPERTIES

Appearance: Clear, colorless liquid Physical State: Liquid Molecular Weight: Not applicable Odor: None Odor Thresh old: Not applicable pH: 5.5 -6.2 Metal Corrosivity: Corrosivity Classification: Not classified as corrosive to metals according to GHS criteria. Steel: Not determined Aluminum: Not determined Specific Gravity/ Relative Density (water = 1; air = 1): 0.98 Viscosity: Not determined Solubility: Water: Miscible Acid: Miscible Other: Not determined Partition Coefficient (n -octanol / water): Not applicable Coefficient of Water / Oil: Not applicable Melting Point: Not determined Decomposition Temperature: Not determined Boiling Point: Not determined Vapor Pressure: Not determined Vapor Density (air = 1): Not determined Evaporation Rate (water = 1): 0.89 Volatile Organic Compounds Content: Not applicable Flammable Prope rties: Material will not burn. Flash Point: Not applicable Method: Not applicable Flammability Limits: Lower Explosion Limits: Not applicable Upper Explosion Limits: Not applicable Autoignition Temperature: Not applicable Explosive Propertie s: Not classified according to GHS criteria. Oxidizing Properties: Not classified according to GHS criteria. Reactivity Properties: Not classifed as self -reactive, pyrophoric, self -heating or emitting flammable gases in contact with water a ccording to GHS criteria. Gas under Pressure: Not classified according to GHS criteria. ______10. STABILITY AND REACTIVITY

Chemical Stability: Stable when stored under proper conditions. Mechanical Impact: None reported Static Discharge: None reported. Reactivity / Incompatibility: None reported Hazardous Decomposition: None reported Conditions to Avoid: Extreme temperatures ______11. TOXICOLOGICAL INFORMATION

Toxicokinetics, Metabolism and Distribution: No information available for mixture. No health effects are anitcipated in normal use. Toxicolog ically Synergistic Products: None reported Acute Toxicity: Based on classification principles, the classification criteria are not met. Specific Target Organ Toxicity - Single Exposure (STOT -SE): Based on classification principles, the classifica tion criteria are not met. Specific Target Organ Toxicity - Repeat Exposure (STOT -RE): Based on classification principles, the classification criteria are not met. Skin Corrosion/Irritation: Based on classification principles, the classification cr iteria are not met. Eye Damage: Based on classification principles, the classification criteria are not met. Sensitization: Based on classification principles, the classification criteria are not met. CMR Effects/Properties (carcinogenic, mutage nic or toxic to reproduction): No germ cell mutagenicity, carcinogenicity or reproductive toxicity data found. This product does NOT contain any IARC listed chemicals. This product does NOT contain any NTP listed chemicals. This product do es NOT contain any OSHA listed carcinogens. Symptoms/Effects: Ingestion: No Effects Anticipated Inhalation: No effects anticipated Skin Absorption: No effects anticipated Chronic Effects: No effects anticipated Medical Conditions Aggrava ted: None reported ______12. ECOLOGICAL INFORMATION

Product Ecological Information: -- No ecological data available for this product. Based on classification principles, not classified as hazardous to the environment. Ingredient Ecological Information: -- No ecological data available for the ingredients of this product. CEPA Sta tement: Chloroform: Persistent and inherently toxic to aquatic orgnisms, not bioaccumultive. CEPA Statement: Potassium Nitrate: Persistent, not bioaccumultive or inherently toxic to aquatic orgnisms. ______13. DISPOSAL CONSIDERATIONS

EPA Waste ID Number: D022 Special Instructions (Disposal): Dispose of material in an E.P.A. approved hazardous waste facility. Empty Containers: Rinse three times with an appropriate solven t. Dispose of empty container as normal trash. Rinsate from empty containers may contain sufficient product to require disposal as hazardous waste. NOTICE (Disposal): These disposal guidelines are based on federal regulations and may be superseded by more stringent state or local requirements. Please consult your local environmental regulators for more information. In Europe: Chemical and analysis solutions must be disposed of in compliance with the respective national regulations. Product packagi ng must be disposed of in compliance with the country -specific regulations or must be passed to a packaging return system. ______14. TRANSPORT INFORMATION

D.O.T.: D.O.T. Proper Sh ipping Name: Not Currently Regulated -- Hazard Class: NA Subsidiary Risk: NA ID Number: NA Packing Group: NA T.D.G.: Proper Shipping Name: Not Currently Regulated -- Hazard Class: NA Subsidiary Risk: NA UN Number/PIN: NA Packing Group: NA I.C.A.O.: I.C.A.O. Proper Shipping Name: Not Currently Regulated -- Hazard Class: NA Subsidiary Risk: NA ID Number: NA Packing Group: NA I.M.O.: Proper Shipping Name: Not Currently Regulated -- Hazard Class: NA Subsidiary Risk: NA ID Number: NA Packing Group: NA Additional Information: There is a possibility that this product could be contained in a reagent set or kit composed of various compati ble dangerous goods. If the item is NOT in a set or kit, the classification given above applies. If the item IS part of a set or kit, the classification would change to the following: UN3316 Chemical Kit, Class 9, PG II or III. If the item is not regulat ed, the Chemical Kit classification does not apply. ______15. REGULATORY INFORMATION

U.S. Federal Regulations: O.S.H.A.: This product does not meet the criteria for a hazardous substance as defined in the Hazard Communication Standard. (29 CFR 1910.1200) E.P.A.: S.A.R.A. Title III Section 311/312 Categorization (40 CFR 370): This product is not hazardous under 29 CFR.1910.1200 and therefore is not covered by Title III under SARA. S.A.R.A. Title III Section 313 (40 CFR 372): This product contains a chemical(s) subject to the reporting requirements of Section 313 of Title III of SARA. Chloroform 302 (EHS) TPQ (40 CFR 355): Chloroform 10,000 lbs. 304 CERCLA RQ (40 CFR 302.4): Chloroform 10 lbs. 304 EHS RQ (40 CFR 355): Chloroform - RQ 10 lbs. Clean Water Act (40 CFR 116.4): Chloroform - RQ 10 lbs. RCRA: Contains RCRA regulated substances. See Section 13, EPA Waste ID Number. State Regulations: California Prop. 65: WARNING - This product contains a chemical known to the State of California to cause cancer. Identification of Prop. 65 Ingredient(s): Chloroform California Perchlorate Rule CCR Title 22 Chap 33: No Trade Secret Re gistry: Not applicable National Inventories: U.S. Inventory Status: All ingredients in this product are listed on the TSCA 8(b) Inventory (40 CFR 710). CAS Number: Not applicable Canadian Inventory Status: All ingredients of this product are DSL L isted. EEC Inventory Status: All ingredients used to make this product are listed on EINECS / ELINCS. Australian Inventory (AICS) Status: All ingredients are listed. New Zealand Inventory (NZIoC) Status: All components either listed or exempt. Korean Inventory (KECI) Status: All components of this product are either listed, listed as the anhydrous compound or exempt. Japan (ENCS) Inventory Status: All components either listed or exempt. China (PRC) Inventory (MEP) Status: All components e ither listed or exempt. ______16. OTHER INFORMATION

Legend: NA - Not Applicable w/w - weight/weight ND - Not Determined w/v - weight/volume NV - Not A vailable v/v - volume/volume

USER RESPONSIBILITY: Each user should read and understand this information and incorporate it in individual site safety programs in accordance with applicable hazard communication standards and regulations.

THE INFORMATION C ONTAINED HEREIN IS BASED ON DATA CONSIDERED TO BE ACCURATE. HOWEVER, NO WARRANTY IS EXPRESSED OR IMPLIED REGARDING THE ACCURACY OF THESE DATA OR THE RESULTS TO BE OBTAINED FROM THE USE THEREOF.