HM Digital Water Quality Tester TDS EZ Meter

The HM Digital TDS-EZ water quality tester is a handheld device used to measure the amount of total dissolved solids (TDS) in water. It's designed to be easy to use, with a large, easy-to-read LCD screen and a hold function to record readings. The meter is factory calibrated to a 342 ppm NaCl solution and can be recalibrated. It also features an auto-off function to conserve battery life.