YINMIK pH Salt Meter 5 in 1 TDS EC Salinity Tester for 5 IN 1 Blue Color
TDS Tester:Helper for checking RO/DI system ,drinking water. The YINMIK digital salinity tester is suitable for multiple purposes and can easily monitor salt water testing for swimming pools, koi pond, seawater, saltwater,aquariums and Spa.