Item Type: Water Quality Tester <br>Material: ABS <br>Battery Model: 2 x Button battery LR44 <br>Battery Capacity: 2 x 160mah <br>Type of Measurement: <br>TDS: Measuring Range: 1-9999ppm, Resolution: 1ppm, Accuracy: ±2% <br>EC: Measuring Range: 1-9999μS/CM, Resolution: 1μS/Cm, Accuracy: ±2% <br>PH: Measuring Range: 0.00-14.00pH, Resolution: 0.01pH, Accuracy: ±0.05 <br>Operating Temperature: 0℃-60℃(32~140℉) <br>Automatic Temperature Compensation: 0℃-60℃ <br>Calibration: PH: Three point calibration; TDS or EC: One point calibration<br>1、ACCURATE AND RELIABLE: For high accuracy, the water quality tester is equipped with an excellent Ti alloy probe that provide reliable automatic temperature compensation to ensure that the reading is always accurate at different temperatures <br>2、VERSATILE AND UPGRADED: Professional TDS, EC, pH, and temperature test pen 4 in 1. The large backlit LCD display has been upgraded to make it easier to read and the auto lock function is easier to use <br>3、HIGHLY SENSITIVE PROBE: Ti alloy probe and high sensitivity glass electrode, support high accuracy water quality measurement, can automatically warm, reduce errors <br>4、INCLUDED STORAGE BOX: Water quality meter selected solid crystal storage box outsourcing, effective protect products and beautiful <br>5、FLEXIBLE SWITCHING: The 4 in 1 water tester has a temperature unit switching function, which support Celsius or Fahrenheit switching to meet your different unit requirements<p>1 x 4 in 1 Water Quality Tester<br>3 x PH Powder<br>1 x User Manual<br>1 x Storage Box</p>