【5 in 1 Multifunction】 - This digital pH meter is designed with 5 in 1 function, which can be used to test PH/TDS/EC/Salinity/water temperature. The measuring range is pH 0.00-14.00 (accuracy 0.01PH), 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% and temperature 0-60℃. 【LCD GREEN BACKLIT DISPLAY DESIGN】 - This PH meter is designed with a bright green backlight LCD screen that displays information in an intuitive layout. You can still read digital even in low visibility situation. With a portable pocket design, it is also convenient to carry. And the 5 minutes automatic shutdown 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 0.1 seconds. TDS electrodes are made of agile, high-quality titanium alloy with perfect corrosion resistance. The pH meter adopts a three-point calibration method to calibrate the electrode to pH 4.01/6.86/9.18 solution to ensure the measurement accuracy. 【 【AUTOMATIC TEMPERATURE COMPENSATION & CALIBRATION】- Liquid temperature may affect the reading levels, but our digital pH water quality tester can accurately measure the pH value of the sample within the temperature range of 0 °C to 60°C / 32 to 140°F, and The PH tester can automatically identify calibration solutions to read digital at a glance. 【WIDE APPLICATION】 - This 5 in 1 multifunctional pH tester is ideal for home and laboratory pH testing applications, which can be used to test the quality of drinking water, swimming pools, aquariums, hot springs, aquaculture , ponds, and well water indoors or during vacations to ensure water safety in daily life.