WIDELY USED AND ACCURATE. Digital TDS meter has measurement range 0-9999ppm, 0-9999µs/cm and ±2% accuracy. PPM meter can also tests the liquid temperature in Fahrenheit or degree Celsius.
One Button function. One button (ON/OFF) to open and use, One button (ON/OFF) to close it, One button (HOLD) to lock the testing result, and One button (SHIFT) to switch the 4 display modes: TDS - ppm & °C, EC - µs/cm & °C, TDS - ppm & °F, EC - µs/cm & °F
AUTOMATIC TEMPERATURE COMPENSATION ( ATC ). Digital TDS tester has the function of ATC, the testing data won’t be influenced by the water temperature, no matter testing ppm or ?s/cm.
AUTO-OFF FUNCTION. The digital ppm tester has the function of auto-off to save the battery’s life.
SMALL SIZE and POCKET PORTABLE. TDS pen tester has small size and low weight as pen, it is easy to be carried, and convenient for you to take it in your pocket when you go out.