ANALYTICAL INSTRUMENTS analytical instruments & pocket-sized testers

ETI offers a comprehensive range of analytical meters including pH, conductivity and dissolved oxygen meters. These instruments are designed as portable analysis testers for use in a wide range of industries. applications These analytical meters can be used in many areas, for example: l l food production l l process industry l l fish farming l aquariums l agriculture pH meters The pH (potential hydrogen) level of any material or substance is defined by the acidity or alkalinity of that substance and is represented on a scale of 0 to 14; 7pH being neutral, 0pH acidic and 14pH alkaline. This factor can affect many parameters in nearly all types of process or production.

alkaline

0pH 7pH 14pH

TDS meters Conductivity and TDS meters are most commonly used to measure the concentration of dissolved solids in liquids. Conductivity meters utilise a substance's ability to conduct an electric current to give a reading in microSiemens (:S) or milli- Siemens (mS). Some TDS instruments automatically convert the conductivity value into parts per million (ppm) thus providing a direct reading of the dissolved solids concentration. Redox meters Redox meters are similar to the pH meters that quantify acidic or alkaline solutions. Liquids can also be graded as oxidising or reducing based on Redox measurements, sometimes referred to as ORP (oxidation reduction potential). Oxidation is a process during which a molecule or loses electrons. Redox meters are used to monitor many processes, particularly those involving reversible actions. dissolved oxygen meters Dissolved oxygen meters are used to determine the quantity of dissolved oxygen in liquids, primarily water. The instruments give a reading/measurement in parts per million (ppm). The quantity of dissolved oxygen in water is a good indicator of water quality.

112 www.etiltd.co.uk serving industry for 25 years 1983-2008 pH testers ANALYTICAL INSTRUMENTS pocket-sized meters pH PAL tester

The pH PAL tester replaces pH litmus paper. This easy to use instrument does the work of more than 300 rolls of indicator paper. The pH PAL is a reliable, robust portable pH tester housed in a water resistant case.

The instrument features an easy to read 6mm LCD display indicating pH over the range of 0 to 14pH with a resolution of 0.1pH and an accuracy of ±0.2pH. The pH PAL's operating specification pH PAL tester temperature range is 0 to +50°C. range 0 to 14pH The pH PAL pocket-sized meter is ideal for measuring pH resolution 0.1pH in many areas including industrial processing, hydroponics, accuracy ±0.2pH swimming pools etc. battery 4 x 1.5 volt button cell (LR44) battery life 200 hours display 6mm LCD order code description dimensions 15 x 32 x 147mm 813-510 pH PAL tester weight 60 grams

Senz pH tester

The Senz pH tester is a user-friendly and simple to use pH meter. Calibration is just a touch of the CAL button and the measurement can be activated to manually hold or to obtain an end-point reading automatically. The unit is housed in a water resistant case and features an easy to read, 8mm LCD display indicating pH over the range of 0 to 14pH with a resolution of 0.1pH and an accuracy of ±0.2pH. The ambient operating temperature range of the specification Senz pH tester Senz pH meter is 0 to +50°C. range 0 to 14pH resolution 0.1pH The Senz pH pocket-sized meter is ideal for measuring pH accuracy ±0.2pH in many areas including industrial processing, hydroponics, battery 4 x 1.5 volt button cell (LR44) swimming pools etc. battery life 150 hours display 8mm LCD order code description dimensions 15 x 32 x 170mm 813-560 Senz pH tester weight 70 grams

Senz pH Pro tester The Senz pH Pro tester features a clear, easy to read, 8mm LCD display. The unit utilises a in conjunction with the . Calibration is just a touch of the CAL button and the measurement can be activated to manually hold or to obtain an end-point reading automatically. The pH Pro pocket-sized tester indicates pH over the range of 0 to 14pH with a resolution of 0.01pH and an accuracy of ±0.05pH. The pH readings are automatically compensated specification Senz pH Pro tester over the operating range of 0 to 70°C. range 0 to 14pH resolution 0.01pH The Senz pH Pro pocket-sized meter is ideal for measuring pH accuracy ±0.05pH in many areas including industrial processing, hydroponics, battery 4 x 1.5 volt button cell (LR44) swimming pools etc. battery life 150 hours display 8mm LCD order code description dimensions 15 x 32 x 170mm 813-812 Senz pH Pro tester weight 70 grams

113 MEASUREMENT THAT WORKS tel: 01903 202151 ANALYTICAL INSTRUMENTS WalkLAB pH, mV & °C meter 3 portable analysis instrument 3 simultaneously displays pH & temperature

The WalkLAB microprocessor pH meter is a three-in- one instrument measuring pH, mV and temperature. The instrument features a clear LCD display and indicates pH over the range of 0 to 14pH, mV over the range of -999 to +999mV and temperature 0 to +99.9°C. The pH meter simultaneously displays pH and temperature and incorporates a simple to use auto- calibration feature. The instrument incorporates an specification pH mV temperature easy to use membrane keypad and is housed in an range 0 to 14pH ±999mV 0 to +99.9°C ABS plastic zip case. resolution 0.01pH 1mV 0.1°C accuracy ±0.01pH ±1mV ±0.5°C The pH meter is supplied as a complete kit; a pH battery & battery life 9 volt MN1604 (PP3) - 300 hours electrode, temperature probe and buffer solutions, display custom LCD in a PVC carrying case. For full details of a range dimensions 32 x 83 x 163mm of optional pH electrodes, please see page 115. weight 350 grams

order code description °C AUTO pH/mV 813-625 WalkLAB three-in-one meter OFF 8000 & 8100 pH or pH & temperature meter 3 simple & reliable analytical instrument 3 two models - pH only or pH & temperature

The 8000 and 8100 digital pH meters are a simple and reliable means of measuring pH over the range of 0 to 14pH with a resolution of 0.01pH. The 8100 additionally includes temperature measurement over the range of 0 to +100°C with a 0.1°C resolution. The units incorporate manual or automatic temperature compensation. Both pH meters feature an easy to read LCD display with open circuit and low battery indication. These meters are ideal for measuring pH in the laboratory or in the field and applications include blending liquids, food processing etc. The 8000 and 8100 are supplied as kits, each specification 8000 pH meter 8100 pH meter range 0 to 14pH 0 to 14pH/0 to +100°C kit comprises a pH meter, a general purpose pH resolution 0.01pH 0.01pH/0.1°C electrode, three buffer capsules and bottles, all accuracy ±0.02pH ±1 digit ±0.02pH/0.2°C ±1 digit housed in a customised carrying case. The 8100 temp. compensation manual 0 to +100°C automatic 0 to +100°C kit includes a PT100 temperature probe. battery & battery life 9 volt MN1604 (PP3) - 150 hours display 12.7 LCD order code description dimensions 36 x 80 x 147mm 862-080 8000 pH meter kit weight 210 grams 862-081 8100 pH meter/ kit 823-501 spare electrode °C pH 160-221 8100 temperature probe

114 www.etiltd.co.uk serving industry for 25 years 1983-2008 pH electrodes ANALYTICAL INSTRUMENTS & accessories pH meters are only part of the system, of equal importance is the design of the pH probes that are used to physically measure the product. This range of standard hand held pH electrodes are fully interchangeable and are designed for use with the 8000, 8100, WalkLAB and MicroBench pH meters or similar pH meters.

order code general purpose electrode This general purpose, plastic bodied, electrode is 823-501 ideal for measuring the pH in liquids and semi- solids in a wide variety of applications including Ø12 x 120mm food processing, agriculture and laboratories.

6mm spear electrode This glass, spear-shaped, penetration pH electrode 823-503 is suitable for measuring the pH in a variety of applications. The probe is ideal for inserting into semi-solid and soft materials. Ø6 x 120mm

12mm spear electrode This glass, spear-shaped, penetration pH electrode 823-502 is ideal for insertion into semi-solid materials or compost/ in a wide variety of applications including food processing and agriculture. Ø12 x 120mm

ATC temperature probe This automatic temperature compensation (ATC) 160-221 temperature probe is ideal for general purpose/ liquid temperature measurements (for use with 8100 pH meter only). Ø3.3 x 130mm pH buffer solutions pH buffer capsules These ready-made pH buffer solutions are suitable for These DIY pH buffer capsules are available in 3 standard checking pH instrumentation and pH electrodes. values, 4pH, 7pH and 9pH. Buffer solutions are available for 4.01pH, 7.00pH and Each capsule makes 100ml of solution when mixed 10.01pH. with distilled water. All buffer solutions are supplied in 100ml bottles. Supplied in packs of 10 capsules.

order code description order code description 816-050 4.01pH 816-004 4pH (pack of 10) buffer capsules 816-051 7.00pH buffer solution 816-007 7pH (pack of 10) buffer capsules 816-052 10.01pH buffer solution 816-009 9pH (pack of 10) buffer capsules

115 MEASUREMENT THAT WORKS tel: 01903 202151 ANALYTICAL INSTRUMENTS MicroBench pH, mV & °C meter 3 ideal for laboratory applications 3 range 0 to 14pH & 0.01pH resolution

The MicroBench pH meter is an economical bench top, mains-powered pH meter that is suitable for basic laboratory applications, educational institutions and similar.

The MicroBench features an easy to read LCD display that indicates pH over the range of 0 to 14pH, mV over the range of -999 to +999mV and temperature 0 to +99.9°C. specification pH mV temperature The unit is housed in an ABS plastic, splashproof range 0 to 14pH ±999mV 0 to +99.9°C housing with an easy to use membrane keypad. resolution 0.01pH 1mV 0.1°C The MicroBench pH meter is supplied with a power accuracy ±0.01pH ±1mV ±0.5°C adaptor but no probes. For full details of the range power AC/DC adaptor 110/230 volt AC/12 volt DC of optional pH electrodes, please see page 115. display custom LCD dimensions 55 x 150 x 200mm order code description weight 500 grams (excluding power adaptor) 813-650 MicroBench pH meter 823-501 pH electrode 813-626 ATC temperature probe °C pH/mV IP65 WalkLAB dissolved oxygen meter 3 portable analysis instrument 3 supplied as a complete kit

The WalkLAB dissolved oxygen meter is designed to measure the quantity of dissolved oxygen in water. Applications for the dissolved oxygen meter include the monitoring of industrial waste where low concentrations indicate possible pollution. Another important area is fish farming, where oxygen levels need to be monitored on a regular basis.

The dissolved oxygen meter features a clear LCD display specification WalkLAB that indicates the dissolved oxygen in water in parts per range 0 to 20.0ppm (mg/L) million (ppm) over the range of 0 to 20.0ppm (mg/L) resolution 0.1ppm (mg/L) with a 0.1ppm resolution. accuracy ±0.4ppm (mg/L) battery 9 volt MN1604 (PP3) The dissolved oxygen meter is supplied as a complete kit battery life 100 hours that contains a WalkLAB dissolved oxygen meter, a DO display custom LCD probe, an electrolyte solution and replacement membrane dimensions 35 x 83 x 164mm caps, all housed in a PVC carrying case. weight 250 grams

order code description 813-600 WalkLAB dissolved oxygen meter DO IP65

116 www.etiltd.co.uk serving industry for 25 years 1983-2008 Senz TDS testers ANALYTICAL INSTRUMENTS testers 3 simple & easy to use testers 3 water resistant pen-shaped case

These conductivity and TDS testers are reliable, pocket-sized instruments that will ensure quick and accurate readings of conductivity and total dissolved solids (TDS). Each Senz TDS tester is housed in a water resistant pen-shaped case that incorporates a simple to use on/off switch. The units incorporate automatic temperature compensation and an auto power off facility. These testers are ideal for testing boiler water, cooling tower water, water treatment processes, dilution of chemicals etc. There are two models of both TDS and conductivity testers, suitable specification TDS1 TDS2 :Siemen mSiemen for either low or high concentrations of total range 0 to 1990 0 to 10000 0 to 1990 0 to 19.9 dissolved solids in liquids. resolution 10ppm 100ppm 10:S 0.1mS accuracy ±2% full scale order code description battery 4 x 1.5 volt button cell (LR44) 813-535 Senz TDS1 meter battery life 100 hours 813-536 Senz TDS2 meter display 8mm LCD 813-537 Senz :Siemen dimensions 22 x 32 x 170mm 813-538 Senz mSiemen weight 55 grams WalkLAB Pro conductivity meter 3 simple to use, supplied as a complete kit 3 portable analysis instrument

The WalkLAB conductivity meter measures conductivity from 0.1:S to 100mS in four different ranges. The ranges of measurement ensure the highest accuracy possible for the application. All the ranges can be accessed at the touch of a button without the need to change the probe. This makes it easy to switch applications without any recalibration. specification WalkLAB Pro conductivity meter The meter is ideal for use in the water treatment, range 0 to 199.9:S 0 to 1999:S 0 to 19.99mS 0 to 100mS brewery and food processing industries to resolution 0.1:S 1:S 0.01mS 0.1mS establish concentration of dissolved solids. accuracy ±2% full scale battery 9 volt MN1604 (PP3) The conductivity meter is supplied as a kit battery life 100 hours that contains a WalkLAB conductivity meter, a display custom LCD conductivity probe and two bottles of calibration dimensions 35 x 83 x 164mm solution, housed in a PVC carrying case. weight 350 grams

order code description AUTO TDS 813-610 WalkLAB Pro conductivity meter OFF

117 MEASUREMENT THAT WORKS tel: 01903 202151 ANALYTICAL INSTRUMENTS therma-anemometers hand held instruments 8908 therma-anemometer

The 8908 mini hand held combined anemometer and thermometer is a general purpose vane air speed meter that simultaneously displays both air flow measurement and temperature. The instrument measures airflow over the range of 1.1 to 20.0 metres/second (60 to 3937 feet/minute) with a resolution of 0.1 metres/second (2 feet/minute) and temperature over the range of -15 to +50°C with a resolution of 0.1°C. The 8908 is housed in a robust ABS case and features a custom LCD display. The instrument is ideal for ventilation surveys, air conditioning, specification 8908 therma-anemometer heating and environmental monitoring. range 1.1-20 mtrs/sec & -15 to +50°C resolution 0.1 mtrs/sec or 2 ft/min & 0.1°C accuracy ±5% of reading (air speed) ±1°C battery & battery life 3 volt CR2032 lithium coin cell - 400 hours order code description dimensions 25 x 45 x 145mm (closed) 825-908 8908 therma-anemometer weight 85 grams

8903 therma-anemometer

The 8903 hand held combined anemometer and thermometer is an accurate, general purpose vane air speed meter that simultaneously displays air flow measurement and temperature. The instrument measures airflow over the range of 0.4-30 metres/second (80-5900 feet/minute) with a resolution of 0.01 metres/second (1 feet/minute) and temperature over the range of -10 to +50°C with a resolution of 0.1°C. The 8903 is housed in a robust ABS case and features a large, custom LCD display. The unit incorporates an integral probe for one-handed operation and calculates air velocity averages for multi-point specification 8903 therma-anemometer readings. The 8903 is ideal for ventilation surveys range 0.4-30 mtrs/sec & -10 to +50°C and environmental monitoring and is supplied resolution 0.01 mtrs/sec or 1 ft/min & 0.1°C with a protective carrying case. accuracy ±3% of reading (air speed) ±0.6°C battery & battery life 9 volt MN1604 (PP3) - 400 hours order code description dimensions 45 x 76 x 183mm 825-903 8903 therma-anemometer weight 200 grams

8901 therma-anemometer The 8901 hand held anemometer and thermometer is a general purpose vane air speed meter that simultaneously displays air flow measurement and temperature. The instrument measures airflow over the range of 0.4-35 metres/second (80- 6900 feet/minute), with a resolution of 0.01 metres/second (1 feet/minute) and temperature over the range of -10 to +50°C with a resolution of 0.1°C. The 8901 is housed in a robust ABS case and features a large, custom LCD display with hold, low battery, average, max/min and air volume indications. The therma-anemometer incorporates a remote probe and calculates air velocity averages for multi-point readings. The 8901 specification 8901 therma-anemometer therma-anemometer is ideal for ventilation range 0.4-35 mtrs/sec & -10 to +50°C surveys and environmental monitoring. The unit resolution 0.01 mtrs/sec or 1 ft/min & 0.1°C is supplied with a protective carrying case. accuracy ±2% of reading (air speed) ±0.6°C battery & battery life 9 volt MN1604 (PP3) - 100 hours order code description dimensions 38 x 71 x 181mm 825-901 8901 therma-anemometer weight 350 grams

118 www.etiltd.co.uk serving industry for 25 years 1983-2008 refractometers ANALYTICAL INSTRUMENTS optical instruments 3 for measuring the sugar & salt content in liquids 3 easy to use - suitable for many industries

This range of general purpose refractometers are optical instruments for measuring the content of dissolved solids in aqueous solutions. The instruments work on the principle of light refraction through liquids. When passing light through a liquid, the refracted angle will be shown on the scale to determine the amount of dissolved solids in the liquid. The refractometers are manufactured from corrrosion resistant sateen brass and incorporate a rubber-insulated hand grip. All models incorporate automatic temperature compensation (ATC) and are suitable for applications where the temperature of samples vary.

specification 813-680 813-682 813-684 813-686 813-690 813-692 range Brix 0 to 10% 0 to 18% 0 to 32% 28 to 62% n/a n/a range Salinity n/a n/a n/a n/a 0 to 28% 0 to 100% resolution 0.1% 0.1% 0.2% 0.2% 0.2% 1% accuracy ±0.1% ±0.1% ±0.2% ±0.2% ±0.2% ±1% dimensions 27 x 40 x 210mm 27 x 40 x 190mm 27 x 40 x 160mm 27 x 40 x 148mm 27 x 40 x 160mm 27 x 40 x 190mm weight 215 grams 200 grams 176 grams 176 grams 176 grams 200 grams

order code description order code description 813-680 refractometer Brix 0 to 10% 813-686 refractometer Brix 28 to 62% 813-682 refractometer Brix 0 to 18% 813-690 refractometer Salinity 0 to 28% 813-684 refractometer Brix 0 to 32% 813-692 refractometer Salinity 0 to 100% 1301 Lux/FC light meter with remote light sensor/probe 3 easy to use pocket-sized light meter 3 incorporates maximum reading & hold functions

The 1301 is an economical light meter ideal for both the professional and hobbyist. The unit allows the user to monitor light intensity and levels in a variety of applications. The best way to use a tester is to measure the light levels when installing new lamps or lighting and then measure the light intensity thereafter on a regular basis until the lamps require replacing. The light meter measures both Lux or foot- candles (FC) over the range of 0 to 50,000 Lux/foot-candles. The correct level of light is imperative in a wide range of working environments for safe working and to avoid unnecessary eye strain. The correct level of light is a necessity for plant growth. Sufficient light is needed for photosynthesis to take place so that specification 1301 light meter plants can flower and bear fruit. Commercially, it is important range 0 to 50,000 Lux/FC to regularly check artificial lighting levels to ensure healthy plant resolution 0.1/1/10/100 Lux/FC growth. The lack of adequate light is the most common cause for accuracy ±5% or ±10% > 10,000 Lux/FC poor plant growth. As artificial lighting will degrade in intensity battery 12 volt MN21 with time, it is essential to measure at regular intervals. battery life 100 hours display 12.7mm LCD order code description dimensions 25 x 64 x 188mm 825-500 1301 Lux & FC light meter weight 160 grams

119 MEASUREMENT THAT WORKS tel: 01903 202151