ITEM NAME:Water Quality Test Meter TDS PH EC Temperature 4 in 1 Kit A1O4 Water Quality Test Meter TDS PH EC Temperature 4 in 1 Kit A1O4 [ Convenience Use ] 5 Seconds know water quality, Accuracy, Faster. This set Combo of TDS PH EC Temperature. [ Accuracy ] PH resolution is 0.01pH,accuracy ±0.01pH.TDS:0~9990ppm,Conducitivity:0~9990us/cm,Accuracy: ±2%.This's same as big brand resolution in Amazon [ Lasted Model ] PH pen have AUTO CALIBRATION function, not need any kind of screwdrivers to calibrate the pH pen tester.TDS pen have Lock & auto shut off function. [ Pocket Portable ] Small size but Suitable for testing pH balance of drinking water, pool, aquarium, RO system, Spa, or hydroponics. Lock function - makes it easy to read and record, press HOLD button then remove from test solution. 4 Display modes: press SHIFT button: TDS - ppm & Celsius, EC - μs/cm & Celsius, TDS - ppm & Fahrenheit, EC - μs/cm & Fahrenheit. 5 minute Auto Shut Off feature, so battery won't run down. Measurement Range: Conductivity: 0 - 9990 μs/cm TDS: 0 - 9990 ppm (parts per million) Degrees Celsius: 0.1 - 80.0 Celsius, Fahrenheit: 32.0 - 176.0 Fahrenheit Accuracy: ± 2% Colour:White + blue Material:ABS Size:16.2*2.9*1.5CM Package Contents: 2 * Water quality test pen Tips:TDS = Total Dissolved Solids, which is any salt, metal or mineral in the water.
