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COM-100: Waterproof EC / TDS / Temp Combo Meter Ideal for all water quality testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment and more. Measures electrical conductivity (EC), total dissolved solids (TDS) and temperature. Three different calibration options (KCl, 442TM, NaCl), each with its own non-linear conversion factor. Automatic Temperature Compensation (ATC) using three temperature coefficients Waterproof housing Measurement Range: 0-9990 mS; 0-8560 ppm (auto-ranging). Digital Calibration (push button) Auto-off function, data-hold function and low-battery indicator. Display: large and easy-to-read LCD screen includes simultaneous temperature reading. The COM-100 meter is calibrated with a mS solution. The meter can be recalibrated with digital calibration using the push buttons, rather than a screwdriver. Includes a cap, batteries and lanyard.

HM Digital introduces its new AquaPro series, a line of handheld TDS/EC meters with a sleek design thats perfect for todays modern kitchen. The AquaPro digital water testers are the next generation for todays tech-savvy and health- conscience consumer. FEATURES Measures total dissolved solids TDS and temperature. Automatic Temperature Compensation ATC Water-resistant housing Measurement Range: 0-5000 ppm Digital Calibration push button Auto-off function, data-hold function and low-battery indicator. Display: large and easy-to-read LCD screen includes simultaneous temperature reading. Factory Calibrated: The AquaPro is calibrated with a 342 ppm NaCl solution. The meter can be recalibrated with digital calibration using the push buttons, rather than a screwdriver. Includes a cap and batteries Comes in a retail-oriented package SPECIFICATIONS TDS Range: 0-5000 ppm mg/L Temperature Range: 0-80 oC; 32-176 oF Resolution: 1 ppm; Temp. resolution is 0.1 oC/F Accuracy: +/- 2% Calibration: Digital calibration by push button. Housing: Water- resistantPower source: 1 x 3V button cell included model CR2032Dimensions: 15 x 2.8 x 1.3 cm 5.9 x 1.1 x .5 inches Weight: 42.5 g 1.5 oz PATENTS PENDING

DiST 8 EC/TDS Temperature Meter. Portable DiST 8 meter is designed for analytical field applications and provides fast, accurate EC or TDS measurements that are automatically temperature compensated. Just pour the sample into the cell cup and choose between an EC or TDS reading. Displays °F or °C. Features user-selectable EC/TDS conversion factor and temperature compensation coefficient. Automatic one-point calibration. Requires four ''AA'' batteries (included). Includes one 20-mL packet of EC calibration solution. 3-7/8''Lx2- 1/8''Wx1-1/2''H. Weighs 7.1 oz. Imported. SPECIFICATIONS: EC Range: 0 to 20 mS/cm TDS Range: 0 to 10 ppt Resolution: 0.1 °C or °F 0.01 mS/cm, 0.01 ppt EC Calibration Solution: 12.88 mS/cm TDS Calibration Solution: 6.44 ppt (conversion = 0.5) or 9.02 ppt (conversion = 0.7) Pest Management, pH, EC & TDS Meters, EC & TDS Meters

DiST 7 EC/TDS Temperature Meter. Portable DiST 7 meter is designed for analytical field applications and provides fast, accurate EC or TDS measurements that are automatically temperature compensated. Just pour the sample into the cell cup and choose between an EC or TDS reading. Displays °F or °C. Features user-selectable EC/TDS conversion factor and temperature compensation coefficient. Automatic one-point calibration. Requires four ''AA'' batteries (included). Includes one 20-mL packet of EC calibration solution. 3-7/8''Lx2- 1/8''Wx1-1/2''H. Weighs 7.1 oz. Imported. SPECIFICATIONS: EC Range: 0 to 3,999 ?S/cm TDS Range: 0 to 2,000 ppm Resolution: 0.1 °C or °F 1 ?S/cm, 1 ppm EC Calibration Solution: 1,413 ?S/cm TDS Calibration Solution: 1,382 ppm (conversion = 0.5) Pest Management, pH, EC & TDS Meters, EC & TDS Meters

TDS-3 Handheld Meter With Carrying Case. Built-in digital thermometer. Ideal for commercial use. Includes a carrying case with belt clip. Highly efficient and accurate due to its advanced microprocessor technology. Functions: Hold Function saves measurements for convenient reading and recording. Auto-off function - the meter shuts off automatically after 10 minutes of non-use to conserve batteries. Display: large and easy-to-read LCD screen. Also available in "x10" mode: reads in increments only of 10 ppm (0-9990 ppm). Measurement Range: 0-9990 ppm. From 0-999 ppm, the resolution is in increments of 1ppm. From 1000 to 9990 ppm, the resolution is in increments of 10ppm, indicated by a blinking 'x10' image. Meters are calibrated with a 342 ppm NaCl solution. Meters can be recalibrated with a mini-screwdriver.

Check the function of your RO membrane and DI resin.

Handheld TDS Meter 0-9990 with ATC & Temp, in vinyl carrying caseThe world’s most popular TDS meter, the TDS-3 is the most reliable and longest lasting meter of its kind. It has a wide range of 0-9990 ppm has a hold button to save readings until it automatically shuts off after 10 minutes of non-use. The built-in thermometer displays the temperature and also compensates TDS for differences in temperature. The unit comes in a protective vinyl case.

DM-1: In-Line Dual TDS Monitor Measure the tap water coming in vs. the purified water going out of your water filtration system at any time. FEATURES Displays TDS levels of the feed water and product water with in & out electrode probes. Highly efficient and accurate due to its advanced microprocessor technology. Auto-Off function conserves battery power. The unit shuts off automatically after 10 minutes of non-use. Dual Range 0-9990 ppm (From 0 - 999 ppm the resolution is 1 ppm. From 1000 to 9990 ppm, the resolution is 10 ppm, indicated by a blinking 'x10' image.) Factory Calibrated: meters are calibrated with a 342 ppm NaCl solution. Meters can be recalibrated with a mini- screwdriver. Comes equipped with John Guest Quick-Connect T-fittings as shown. Installs quickly and easily.