Portable Water Tester with ATC for Drinking Water, AquariumsWidely be used for all Water Quality Testing, Water Purification Applications, Aquaculture, Hydroponic, Pool & Spa, Colloidal Silver, Water Treatment and more. It’s a must have handy tool for every household, testing for tap water, filtered water, distilled water, bottled water, well water, refrigerated water, etc.Features: 1)Automatic Temperature Compensation(ATC) 2) Equipped with backlit LCD for easy reading. If TDS≤40, the backlit color is green, If TDS>40, the backlit color is red. 3)Auto-Lock Function: From t
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