PURCHASE GUIDE a Quick and Easy Checklist of Science Essentials 2021 See Your Flinn Scientific Catalog/Reference Manual Or Visit for Product Details
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Performance Validation of the Microbiologique Microfilm Test
MAI ET AL.: JOURNAL OF AOAC INTERNATIONAL VOL. 101, NO. X, 2018 1 FOOD BIOLOGICAL CONTAMINANTS Performance Validation of the Microbiologique MicrofilmTM Test System for AOAC Research Institute Performance Tested Method SMCertification AOAC Performance Tested Method SM 051702 Abstract ANNA SHAPOVALOVA and HARISH K. JANAGAMA Molecular Epidemiology, Inc., 15300 Bothell Way NE, The Microfilm™ Test System is intended for quantitative Lake Forest Park, WA 98155 microbiology and consists of three types of Microfilms for aerobic LONG VUONG and ALEX FRIEDRICH plate count (Microfilm APC), total coliform and Escherichia coli IEH Laboratories and Consulting Group, Inc., 15300 Bothell count (Microfilm TCEc), and yeast and mold count (Microfilm Way NE, Lake Forest Park, WA 98155 YMC). This study evaluated the performance of the Microfilm DYLAN JOHNSON Test System against International Organization for Standardization Molecular Epidemiology, Inc., 15300 Bothell Way NE, (ISO) methods on 20 food matrixes and 2 environmental surfaces. Lake Forest Park, WA 98155 Ruggedness, robustness, and stability were also determined, LOURDES M. NADALA while inclusivity and exclusivity studies were performed on Molecular Epidemiology, Inc., 15300 Bothell Way N.E., Microfilm TCEc and YMC. An independent laboratory evaluated Lake Forest Park, WA 98155; Microbiologique, the performance on four food matrixes and one environmental Inc., 8215 Lake City Way NE, Seattle, WA 98115 surface. No significant differences and high correlation coefficients VAN NGUYEN were observed between the Microfilm Test System and the Microbiologique, Inc., 8215 Lake City Way NE, Seattle, corresponding ISO methods (ISO 4833-1:2013 for APC, ISO WA 98115 4832:2006 for total coliform count, ISO 16649-2: 2001 for E. -
General Chemistry Laboratory I Manual
GENERAL CHEMISTRY LABORATORY I MANUAL Fall Semester Contents Laboratory Equipments .............................................................................................................................. i Experiment 1 Measurements and Density .............................................................................................. 10 Experiment 2 The Stoichiometry of a Reaction ..................................................................................... 31 Experiment 3 Titration of Acids and Bases ............................................................................................ 10 Experiment 4 Oxidation – Reduction Titration ..................................................................................... 49 Experiment 5 Quantitative Analysis Based on Gas Properties ............................................................ 57 Experiment 6 Thermochemistry: The Heat of Reaction ....................................................................... 67 Experiment 7 Group I: The Soluble Group ........................................................................................... 79 Experiment 8 Gravimetric Analysis ........................................................................................................ 84 Scores of the General Chemistry Laboratory I Experiments ............................................................... 93 LABORATORY EQUIPMENTS BEAKER (BEHER) Beakers are containers which can be used for carrying out reactions, heating solutions, and for water baths. They are for -
Laboratory Equipment Reference Sheet
Laboratory Equipment Stirring Rod: Reference Sheet: Iron Ring: Description: Glass rod. Uses: To stir combinations; To use in pouring liquids. Evaporating Dish: Description: Iron ring with a screw fastener; Several Sizes Uses: To fasten to the ring stand as a support for an apparatus Description: Porcelain dish. Buret Clamp/Test Tube Clamp: Uses: As a container for small amounts of liquids being evaporated. Glass Plate: Description: Metal clamp with a screw fastener, swivel and lock nut, adjusting screw, and a curved clamp. Uses: To hold an apparatus; May be fastened to a ring stand. Mortar and Pestle: Description: Thick glass. Uses: Many uses; Should not be heated Description: Heavy porcelain dish with a grinder. Watch Glass: Uses: To grind chemicals to a powder. Spatula: Description: Curved glass. Uses: May be used as a beaker cover; May be used in evaporating very small amounts of Description: Made of metal or porcelain. liquid. Uses: To transfer solid chemicals in weighing. Funnel: Triangular File: Description: Metal file with three cutting edges. Uses: To scratch glass or file. Rubber Connector: Description: Glass or plastic. Uses: To hold filter paper; May be used in pouring Description: Short length of tubing. Medicine Dropper: Uses: To connect parts of an apparatus. Pinch Clamp: Description: Glass tip with a rubber bulb. Uses: To transfer small amounts of liquid. Forceps: Description: Metal clamp with finger grips. Uses: To clamp a rubber connector. Test Tube Rack: Description: Metal Uses: To pick up or hold small objects. Beaker: Description: Rack; May be wood, metal, or plastic. Uses: To hold test tubes in an upright position. -
2019 Beverage Industry Supplies Catalog Table of Contents
2019 Beverage Industry Supplies Catalog Table of Contents Barrels, Racks & Wood Products……………………………………………………………...4 Chemicals Cleaners and Sanitizers…………………………………………………………..10 Processing Chemicals……………………………………………………………..13 Clamps, Fittings & Valves……………………………………………………………………….14 Fermentation Bins…………………………………………………………………………………18 Filtration Equipment and Supplies……...…………………………………………………..19 Fining Agents………………………………………………………………………………………..22 Hoses…………………………………………………………………………………………………..23 Laboratory Assemblies & Kits…………………………………………………………………..25 Chemicals……………………………………………………………………………..28 Supplies………………………………………………………………………………..29 Testers………………………………………………………………………………… 37 Malo-Lactic Bacteria & Nutrients…………………………………………………………….43 Munton’s Malts……………………………………………………………………………………..44 Packaging Products Bottles, Bottle Wax, Capsules………………………………………………….45 Natural Corks………………………………………………………………………..46 Synthetic Corks……………………………………………………………………..47 Packaging Equipment…………………………………………………………………………….48 Pumps………………………………………………………………………………………………….50 Sulfiting Agents…………………………………………………………………………………….51 Supplies……………………………………………………………………………………………….52 Tanks…………………………………………………………………………………………………..57 Tank Accessories…………………………………………………………………………………..58 Tannins………………………………………………………………………………………………..59 Yeast, Nutrient & Enzymes……………………………………………………………………..61 Barrels, Racks & Wood Products Barrels Description Size Price LeRoi, New French Oak 59 gl Call for Pricing Charlois, New American Oak 59 gl Call for Pricing Charlois, New Hungarian Oak 59 gl Call for Pricing Used -
Flinn Scientific 2019 Purchase Guide a Quick and Easy Checklist of Science Essentials
Flinn Scientific 2019 Purchase Guide A Quick and Easy Checklist of Science Essentials Use this Purchase Guide as a handy tool for: • Taking Inventory • Order Preparation • Budget Management • Future Planning See your Flinn Scientific Catalog/Reference Manual SCIENTIFIC or visit www.flinnsci.com for product details. It’s Easy to Order Tom Trapp from Flinn Scientific! National Account Development Consultant [email protected] www.flinnsci.com/tom-trapp/sa1001 Online 402-960-5578 (mobile) www.flinnsci.com Offering personal assistance to help meet your science curriculum, supply, and lab safety needs. Email [email protected] Quality Products, Fast Delivery, Fax and Low Prices Guaranteed 1-866-452-1436 (toll free) Mail Flinn Scientific, Inc. P.O. Box 219 Batavia, IL 60510-0219 Phone 1-800-452-1261 7:30 am to 5:00 pm CT Monday through Friday Our Guarantee Flinn Scientific, Inc. guarantees that no sale is complete unless the customer is satisfied. Every item we furnish will either conform to the catalog specification, or we will ask your permission, prior to shipment, to ship an alternative product. If you find a lower published nationally advertised catalog price for an identical item, Flinn will “meet or beat” that price. Use this purchase guide containing popular product recommendations ©2019 Flinn Scientific, Inc. All Rights Reserved. to prepare your order, take inventory, and manage your budget. 1 www.flinnsci.com Flinn Scientific 2019 Purchase Guide 1 Item Rec. Item Rec. Product / Item Name Qty 2019 Price Total Product / Item Name Qty 2019 Price Total No. Qty No. Qty Safety & Personal Protection Equipment Aspirator, Water, Polypropylene AP1203 1 $ 19.30 $ - Apron, rubberized, 27" W X 36" L AP7125 30 $ 15.00 $ - Autoclave, Electric, Portable AP1004 1 $ 865.20 $ - Apron, plastic, 30" W x 36" L AP7120 30 $ 7.25 $ - ♦ Balance, Flinn Triple Beam OB2181 $ 115.00 $ - Gloves, Butyl rubber for conc. -
Bunsen Burner Safety
Proper Use of a Bunsen Burner If using a Bunsen burner in a biological safety cabinet, see: http://research.wayne.edu/oehs/pdf/gas-in-bsc.pdf Prior to Lighting Bunsen Burner: • Know the location of the laboratory’s main gas shut off valve and fire extinguisher. • Place the Bunsen burner away from any overhead shelving, equipment, or light fixtures by at least 12 inches. • Remove all papers, notebooks, combustible materials, and excess chemicals from the area. • Tie-back any long hair, dangling jewelry, or loose clothing. • Use correct tubing (butyl rubber hose). Inspect hose for cracks, holes, pinch points, or any defect and replace if necessary. Ensure that the hose fits securely on the gas valve and the burner. • Notify others in the lab that the burner will be in use. Lighting Bunsen Burner: • Before turning on gas, have a sparker/lighter with extended nozzle to ignite burner. Never use matches. • Check connections to burner and desk outlet valve. • Close needle valve and collar. • Open gas valve fully. • Open needle valve 1/2 turn. • Use the spark/lighter to light the flame. • Adjust flame by turning the collar to regulate air flow and produce an appropriate flame for the experiment (typically a medium blue flame). During Use: • Never leave a lighted burner unattended. Drafts (including those created by a hood) may extinguish the flame, but the gas will still be on. This could result in an explosion. • Never face the vessel (test tube, beaker, etc.) being used to heat a material toward yourself or others near the burner. In some experiments, a hot plate may be used in place of the Bunsen burner. -
SF#11086 Sterilization and Aseptic Technique
Publication No. 11086 Sterilization and Aseptic Technique Introduction Microbiology lab activities are common in middle school and high school life science courses. Learning basic microbiology lab techniques and procedures is interesting and relevant to most students—many of them, after all, have had at least one throat culture or other microbiology lab test in their lives. The requirements for safe microbiological work in the classroom include the knowledge and practice of aseptic technique and sterilization procedures. Standard Microbiology Practices The federal government has outlined general safety standards for microbiological work in their publication Biosafety in Microbiological and Biomedical Laboratories. Biosafety Level I (BSL 1) practices described in this book are appropriate for secondary educational teaching laboratories. BSL 1 work involves using strains of viable, nonpathogenic microorganisms that are known not to cause disease in healthy adult humans and are thus of minimal potential hazard to students, teachers or the environ- ment. The level of containment in BSL 1 relies on standard microbiological practices in laboratory settings. Students and lab per- sonnel should receive specific training in the procedures conducted in the laboratory. Standard microbiological practices include: • Wash hands thoroughly with soap and water before and after handling viable materials, after performing microbiological transfers and observations or working with potentially hazardous materials, and before leaving the laboratory. • Eating, drinking, smoking, handling of contact lenses, applying cosmetics, and storing food for human use are not permit- ted in laboratory work areas. • Pipetting by mouth is prohibited—use only mechanical pipetting devices. • There should be policies and procedures for safe disposal of sharps, including broken glassware. -
Standard Methods for the Examination of Water and Wastewater
Standard Methods for the Examination of Water and Wastewater Part 1000 INTRODUCTION 1010 INTRODUCTION 1010 A. Scope and Application of Methods The procedures described in these standards are intended for the examination of waters of a wide range of quality, including water suitable for domestic or industrial supplies, surface water, ground water, cooling or circulating water, boiler water, boiler feed water, treated and untreated municipal or industrial wastewater, and saline water. The unity of the fields of water supply, receiving water quality, and wastewater treatment and disposal is recognized by presenting methods of analysis for each constituent in a single section for all types of waters. An effort has been made to present methods that apply generally. Where alternative methods are necessary for samples of different composition, the basis for selecting the most appropriate method is presented as clearly as possible. However, samples with extreme concentrations or otherwise unusual compositions or characteristics may present difficulties that preclude the direct use of these methods. Hence, some modification of a procedure may be necessary in specific instances. Whenever a procedure is modified, the analyst should state plainly the nature of modification in the report of results. Certain procedures are intended for use with sludges and sediments. Here again, the effort has been to present methods of the widest possible application, but when chemical sludges or slurries or other samples of highly unusual composition are encountered, the methods of this manual may require modification or may be inappropriate. Most of the methods included here have been endorsed by regulatory agencies. Procedural modification without formal approval may be unacceptable to a regulatory body. -
High School Chemistry
RECOMMENDED MINIMUM CORE INVENTORY TO SUPPORT STANDARDS-BASED INSTRUCTION HIGH SCHOOL GRADES SCIENCES High School Chemistry Quantity per Quantity per lab classroom/ Description group adjacent work area SAFETY EQUIPMENT 2 Acid storage cabinet (one reserved exclusively for nitric acid) 1 Chemical spill kit 1 Chemical storage reference book 5 Chemical waste containers (Categories: corrosives, flammables, oxidizers, air/water reactive, toxic) 1 Emergency shower 1 Eye wash station 1 Fire blanket 1 Fire extinguisher 1 First aid kit 1 Flammables cabinet 1 Fume hood 1/student Goggles 1 Goggles sanitizer (holds 36 pairs of goggles) 1/student Lab aprons COMPUTER ASSISTED LEARNING 1 Television or digital projector 1 VGA Adapters for various digital devices EQUIPMENT/SUPPLIES 1 box Aluminum foil 100 Assorted rubber stoppers 1 Balance, analytical (0.001g precision) 5 Balance, electronic or manual (0.01g precision) 1 pkg of 50 Balloons, latex 4 Beakers, 50 mL 4 Beakers, 100 mL 2 Beakers, 250 mL Developed by California Science Teachers Association to support the implementation of the California Next Generation Science Standards. Approved by the CSTA Board of Directors November 17, 2015. Quantity per Quantity per lab classroom/ Description group adjacent work area 2 Beakers, 400 or 600 mL 1 Beakers, 1000 mL 1 Beaker tongs 1 Bell jar 4 Bottle, carboy round, LDPE 10 L 4 Bottle, carboy round, LDPE 4 L 10 Bottle, narrow mouth, 1000 mL 20 Bottle, narrow mouth, 125 mL 20 Bottle, narrow mouth, 250 mL 20 Bottle, narrow mouth, 500 mL 10 Bottle, wide mouth, 125 -
Putting Chemicals Into Groups – Practical Guidance
Putting chemicals into groups – Practical guidance There are three practical activities in this piece of work, an introductory demonstration, a class practical, and finally a second demonstration to show students the techniques that they will not be using for themselves Equipment and materials For introduction: heating salt and sugar Eye protection Bunsen burner Tripod, gauze, heat resistant mat Bottle tops or other small container for heating small amount of substance Table salt (NaCl) Sugar For class practical: per group of students Eye protection Bunsen burner Tripod, gauze, heat resistant mat Bottle tops or other small container for heating small amount of substance 100 cm3 (or smaller) beakers Small spatulas Stirring rod Test tubes Mineral wool Access to a fume cupboard (optional) The chemicals: These should be in small bottles, labelled with the letter given only. Students must be told not to heat H or J except in very small quantities in the fume cupboard. A salt – sodium chloride G wax B silicon H iodine C copper I sand (silicon dioxide) D washing soda/sodium carbonate J sulfur E sugar K carbon F aluminium For demonstration: Filter papers Circuit tester – or power pack, leads, crocodile clips, graphite electrodes and light bulb in holder Iron nail Cyclohexane (Highly flammable, harmful, dangerous for the environment) Test tubes and bungs Small spatulas Nuffield Practical Work for Learning: Argumentation • Putting chemicals into groups • Practical guidance page 1 of 4 DRAFT pre‐publication pilot material NOT FOR DISTRIBUTION © Nuffield Foundation 2012 • downloaded from www.nuffieldfoundation.org Putting chemicals into groups – Practical guidance Health & Safety and Technical notes Before carrying out this practical, users are reminded that it is their responsibility to carry out a risk assessment in accordance with their employer’s requirements, making use of up‐to‐date information. -
Laboratory Equipment Used in Filtration
KNOW YOUR LAB EQUIPMENTS Test tube A test tube, also known as a sample tube, is a common piece of laboratory glassware consisting of a finger-like length of glass or clear plastic tubing, open at the top and closed at the bottom. Beakers Beakers are used as containers. They are available in a variety of sizes. Although they often possess volume markings, these are only rough estimates of the liquid volume. The markings are not necessarily accurate. Erlenmeyer flask Erlenmeyer flasks are often used as reaction vessels, particularly in titrations. As with beakers, the volume markings should not be considered accurate. Volumetric flask Volumetric flasks are used to measure and store solutions with a high degree of accuracy. These flasks generally possess a marking near the top that indicates the level at which the volume of the liquid is equal to the volume written on the outside of the flask. These devices are often used when solutions containing dissolved solids of known concentration are needed. Graduated cylinder Graduated cylinders are used to transfer liquids with a moderate degree of accuracy. Pipette Pipettes are used for transferring liquids with a fixed volume and quantity of liquid must be known to a high degree of accuracy. Graduated pipette These Pipettes are calibrated in the factory to release the desired quantity of liquid. Disposable pipette Disposable transfer. These Pipettes are made of plastic and are useful for transferring liquids dropwise. Burette Burettes are devices used typically in analytical, quantitative chemistry applications for measuring liquid solution. Differing from a pipette since the sample quantity delivered is changeable, graduated Burettes are used heavily in titration experiments. -
Bunsen Burner Lab Bunsen Burner
Bunsen Burner Lab Gas regulator knob Name: _____________________________________________ Period: ________ Date: __________ Score:_________ I. Background—Parts of the Bunsen burner Name of Part Function Barrel Air intake openings (holes) Needle valve Gas regulator knob Base Gas intake tubing Gas valve II. Burner flame characteristics A) Close the air holes at the base of the burner. The flame now has a(n) _________________________________ color. This is called a luminous flame. With the crucible tongs, hold a dry porcelain evaporating dish in the tip of the flame for about a minute. A(n) __________________________________________ color deposit of what appears to be ____________________________________ forms on the dish. This deposit comes from the incompletely burned gas. B) Now open the air holes and note the change in the appearance of the flame. The flame now becomes a(n) ____________________________________ color. This is called a nonluminous flame. (NOTE: If too much air is admitted, the flame may “strike back” and burn at the base. If a burner strikes back, the gas must be turned off, the air supply decreased, and the burner relighted.) Regulate the air and gas supply so that the flame is as colorless and quiet as possible. Clean the evaporating dish by means of water and a paper towel and hold the DRY dish in this nonluminous flame. Does the bottom of the dish now become coated as before with the luminous flame?________________________________________________ Bunsen Burner Lab Gas regulator knob Name: _____________________________________________ Period: ________ Date: __________ Score:_________ I. Background—Parts of the Bunsen burner Name of Part Function Barrel Air intake openings (holes) Needle valve Gas regulator knob Base Gas intake tubing Gas valve II.