1、Digital pH measuring instrument, measuring range is 0.00‑14.00PH, high accuracy, small error. 2、LCD display, with backlight function, easy to read values and accurate measurement. 3、Widely used in water sources, aquariums, hydroponics, spas, swimming pools and other water systems. 4、The electrode probe can be replaced, the response is sensitive and the measurement is convenient. 5、Water quality tester kit, perfectly suitable for aquaculture, laboratories, sewage treatment, etc. Item Type: PH Tester Material: Plastic Weight: Approx. 361g / 12.7oz Measuring Range: 0.00-14.00PH Resolution: 0.01PH Accuracy: ±0.1PH Battery Information: 4 x 1.5V (AG-13) (Battery Not Included) Temperature Compensation: 0℃-50℃ How to Use: Connect the probe to the host, turn on the switch, and put the probe into the liquid to be tested. 1 x PH Tester (Battery Not Included) 1 x Electrode Head 1 x Manual 1 x Screwdriver 1 x Protective Box