5-in-1 Multi-Function - This digital pH meter is designed with 5-in-1 function, which can be used to test the PH / TDS / EC / salinity / temperature of water. Measuring range is pH 0.00-14.00 (0.01PH accuracy), TDS 0-10000ppm, 10.1-200.00 ppt, EC 0-10000uS/cm, 10.1-19.99mS.20.1-400.0mS/cm, salinity 0.01%-25.00% temperature 0-60°C. LCD Green Backlit Display Design - This pH meter is designed with a clear LCD green backlit screen to display information in an intuitive layout. Even in low visibility, you can still read the numbers. It is easy to carry with the hand-held pocket-sized design. 5-minute auto-off design saves power and ensures battery life. High-precision PH Tester - The glass probe of this pH tester is made of low-resistance glass sensitive film (25MQ), and the response speed is within 0.1 second. TDS electrodes are made of flexible high-quality titanium alloy, which has perfect corrosion resistance. The pH meter uses a three-point calibration method to calibrate the electrode to a solution of pH 4.01/6.86/9.18 to ensure the accuracy of the measurement. AUTOMATIC TEMPERATURE COMPENSATION AND CALIBRATION - The temperature of the liquid may affect the reading level, but our digital pH water quality tester can accurately measure the pH value of the sample in the temperature range of 0°C-60°C / 32-140°F, and the pH The tester can automatically recognize the calibration solution and read the number quickly. WIDE APPLICATION - This 5 in 1 multifunctional PH tester is ideal for home and laboratory pH testing applications, it can be used to test drinking water, swimming pool, aquarium, spa, aquaculture, pond, indoor or replenish well water during vacations to ensure Daily life water safety.