6-in-1 Smart Water Tester for Drinking Water with APP Monitoring, Digital Water Testing Kit for TDS Meter, EC, Temp, TOC, COD, UV275, Professional Water Tester for Home, Well, Tap & Outdoor

9-in-1 Smart Water Tester with APP Monitoring, Digital Water Test Kit for Turbidity, TDS, EC, Temp, Salt, GH, TOC, COD & UV275, Professional Water Tester for Drinking Water, Well, Tap & Outdoor