The pH meter has a 3-in-1 function that simultaneously measures pH, TDS and temperature with high accuracy. With just one water tester, you can easily monitor multiple important parameters in your water. The drinking water pH tester comes with a high-sensitivity probe, you can read the results quickly, with a measurement range of 0-14.0. High accuracy with a resolution of 0.01. The pH meter provides precise pH readings, ensuring you get accurate information about the pH levels in your water. The digital pH meter has an automatic calibration function and is equipped with pH calibration powder pH 4.00 / pH 6.86 / pH 9.18. Just the automatic calibration button and the water pH meter automatically identify the calibration solution. Automatic calibration ensures accurate and consistent readings every time. The pH meter has an automatic temperature compensation function that can be adjusted according to water temperature and quality. The water meter can accurately determine the pH of a sample from 32°F-140°F (0°C - 60°C), eliminating inaccuracies caused by changes in liquid temperature. and portable size allows you to easily carry the TDS meter in your pocket and take measurements anywhere. Digital TDS Water pH Meter can be used to test the pH balance in drinking water, swimming pools, aquariums, and any other liquid. The pH meter with green backlight LCD helps record readings easily even in low light conditions. Colour:As Shown Material:ABS Package Contents: 1 * water quality tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.