PLAY X STORE Water Quality Test Meter,Digital Tool With TDS, EC and Temperature. 0-9990 ppm Measurement Range &plusmn;2% Readout Accuracy Highly efficient and accurate due to the advanced microprocessor technology. Wide measuring range: Multifunction and accurate:Automatic temperature compensation to more accurate.The lock function Easy to use:3 buttons to use and shift.Steps are simple and easy to operate. Portable:Leather case to protect it adequately.Ultra light and pen design are convenient for person