Portable TDS Meter

Portable TDS Meter
The TDS is the total weight of all solids that are dissolved in given volume water ,express in milligram per liter (mg/L),or in parts per million (PPM).
The TDS meters are used to test water quality and is the simple and effective way to make sure whether you always drink pure water.
Specification:
Range:0-9,990 ppm
Accuracy:+/-2%
Battery:2*1.5v (button cell)
Size:140*23*15mm
Weight:32g