Replacement water filters, RO reverse osmosis membranes and whole house filter systems. Refrigerator water filters, pool and spa filter. Pentek, OMNIFILTER water filters. Chiller Daddy water chillers
Large selection of replacement water filters, reverse osmosis membranes, testing kits and water filter system repair parts. From one water filter or membrane to case quantity discounts.
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Test for TDS (total disolved solids)
Free and Tptal Chlorine
Nitrates and Nitrites
Pool and Spa
TDS-3 Handheld Pure Water Testing Meter For Total Dissolved Solids With Carrying Case. HM Digital. Features Ideal for commercial use. Includes a carrying case with belt clip. Highly efficient and accurate due to its advanced microprocessor technology. 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. 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. Built-in digital thermometer Display: large and easy-to-read LCD screen. Factory Calibrated.
SP-P2 Preplacement Sensors
Ph Meter Buffer Solution
Ph Meter Storage Solution
Hardness Water Tests - Bottle Of 50 Individual Home Tests - Quick Results. Use with ease in your own home. Test for hard water. Find out what level of hardness is coming into your house. Monitor water softener performance. Be sure your settings are correct for premium soft water. Very simple use and very fast results.
Water Test - School Project Kit Water Tests - Individual Water Test - School Project Kit Water Tests - Very simple use and very fast results. Fast & Easy - Easy to use. Do it yourself in the class room. 8 different tests allow students to analyze 5 separate water supplies. Ease and accuracy prompts parents, students and educators to explore water quality in science classes and school fairs. Tests include Nitrates/Nitrites, pH/Alkalinity/Hardness, Chlorine, Copper, Iron. Great class project. Order 1 test kit per 5 students.
Learn more about using TDS meters and total dissolved solids. See TDS meters in our huge selection. Low prices and fast shipping online since 1999. Millions sold.
pH Water Tester - Handheld meters and testers
Precipitators for water testing and demonstations
Be sure to check our Parts Department for important parts such as TDS Testers For Reverse Osmosis Membranes, Replacement Tanks, O-rings , Filter Housing Wrenches, Faucets, Pumps, Fittings, UV Systems and more parts for your reverse osmosis pure water filtration system. View maintenance and servicing tips online at our Installation & Trouble shooting Guide.
Simply enter your Feed Water TDS and RO Water TDS into the boxes above and click "Submit". The percentage of TDS Rejection will be displayed. We normally recommend membrane replacement once you drop below 75%. This may vary in areas with high TDS in the feed water.
See our selection of TDS meters under Water Tests