Multiple 5-in-1 Functions: This digital pH meter is designed with 5-in-1 functions, which can be used to test PH/TDS/EC/salinity/water temperature. Measuring range is pH 0.00-14.00 (0.01PH accuracy), TDS 0-1000ppm, 10.1-200.00 ppt, EC 0-10000uS/cm, 10.1-19.99mS.20.1-400mS/cm, salinity 001%-25.00% and temperature 0-60 Green Backlit LCD Screen DesignThis PH meter is designed with a clear LCD screen and green backlight to display information in an intuitive design. Even in low visibility, you can still read digital content. Portable pocket size design, easy to carry. 5-minute auto-off design saves energy and ensures battery life. High Precision PH TesterThe glass probe of this pH tester is made of low-strength glass sensitive film (25MQ), and the response speed is 0.1 seconds. The TDS electrode is made of high-quality flexible titanium alloy, which has excellent corrosion resistance. The pH meter adopts a three-point calibration method to calibrate the electrode to a 4.01/6.86/9.18 pH solution to ensure measurement accuracy. Automatic Temperature Compensation and CalibrationThe liquid temperature may affect the reading level, but our digital pH tester and water quality can accurately measure the pH value of the sample within the temperature range of 0C-60/32-140F, and The pH tester can automatically recognize the calibration solution for an instant reading of the number. WIDE APPLICATIONSThis 5-in-1 multifunctional pH meter is ideal for home and laboratory pH testing applications, can be used to test drinking water quality, swimming pools, aquariums, spas, aquaculture, ponds and wells for watering indoors or on holidays , to ensure the safety of daily life water. If you have any product questions, please feel free to contact us.