Temperature TDS EC Meter Pen Water Quality Tester Measurement with pH meter - all in one TDS EC and pH

Total Dissolved Solids(TDS) are the total weight of all solids (minerals, salts or metals) that are dissolved in a given volume of water, expressed in milligrams per liter (mg/L) or in parts per million (PPM). Advanced CPU: Automatically calibrated per temperature, 0 - 9990 ppm TDS Measurement Range with 1 ppm Resolution, +/- 2% Readout Accuracy Data Hold Function: Holds measurement value when moving out of water for convenient reading and recording Auto-off Function: Shuts off automatically after 10 minutes of non-use to conserve batteries ATC and Temperature Function: ATC Function promises high accuracy and Temperature Function allows users to get to know the temperature of the the liquid Come with 1x Poit tds meter, 1x user manual, 2x 1.5V LR44 button cells(build-in); 1x leather carrying case; 3-Year Warranty by Poit Store