• ORP Meter & Hydrogen Water Tester – 7-in-1 Water Quality Tester for Drinking Water, pH, TDS, EC, Temp, Salinity & S.G Monitor, Digital TDS Meter for Home, Hydroponics, Aquarium，Pools KWD 24.500
• TDS Meter Digital Water Tester, Accurate & Reliable ppm Meter,TDS, EC & Temperature,3 in 1 Water Quality Tester for Drinking Water, Hot Tubs,Swimming Pool, Aquarium, Hydroponics,Wine Brewing KWD 12.500
• Pool Salt Tester & PH Meter, Digital Salinity Meter and PH Tester for Pool Salt Water and Drinking Water, 5 in 1 Salinity PH Temp EC and TDS Meter for Swimming Pool Hot Tub Spas, High Accuracy(Blue) KWD 4.500