4 in 1 TDS, PPM, EC, Temp Meter Tester

This 4-in-1 TDS, PPM, EC, and Temperature meter is a multi-function digital water quality tester. It uses electrical conductivity to measure the levels of dissolved salts, minerals, and metals in a liquid, which indicates its purity. These meters are commonly used for testing drinking water, aquarium water, hydroponics solutions, and water from pools or spas.