Information about this product 5 in 1 MULTIFUNCTIONAL - This digital pH meter is designed with a 5-in-1 function that 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, 10,1-19,99 ms.20, 1-400,0 mS/cm, salinity 01 ms/cm, %-25, %-00% and temperature 0-60 ℃. Green LCD Backlight - This pH-meter is designed with a transparent green LCD backlight that displays information in an intuitive layout. Digital reading is possible even in poor visibility. With its handy pocket design, it is also convenient to carry. 5-minute automatic shutdown saves energy and ensures battery life. HIGH ACCURACY pH TEST - The glass probe of this pH tester is made of glass-resistant film (25MQ), and the reaction rate is 0,1 seconds. TDS electrodes are made of flexible, high-quality titanium alloy with excellent corrosion resistance. The pH meter adopts a three-point calibration method to calibrate the electrode to a pH 4,01/6,86/9,18 solution to ensure measurement accuracy. Automatic Temperature Compensation and Calibration - Liquid temperature can affect reading levels, but our digital pH water quality tester can accurately measure the pH value of the sample in the temperature range from 0°C to 60°C, and the pH tester can automatically identify calibration solutions to quickly read the numbers. Wide Application - This multifunctional 5-in-1 pH tester is ideal for home and laboratory pH tests, which can be used to test the quality of drinking water, swimming pools, aquariums, hot springs, aquaculture, ponds and water indoors or during holidays to ensure water safety in everyday life. Charging time: about 200 minutes Product Type: Water Quality Tester Material: ABS Conductivity test range: 0-10000uS/cm 10.01-19.99ms 20.1-400mS/CM Resolution: 1uS/cm; 0,1 ms/cm Accuracy: ±2% read Test Range: 0-1000ppm 1000ppm -10000ppm 10.1-200.0 PPT Accuracy: ±2% read Salinity Measurement Range (Salinity): 0.00-25.00% Resolution: 0.01% Accuracy: 0,01-5,00% (±0,1%) 5,10-25,00% (±1%) PH Test Range: 0.01-14.00pH Resolution: 0.01pH Accuracy: ±0,05pH Temperature compensation: Automatic temperature compensation (ATC) Operating environment: 0-60,0°C (32,00-140°F); 100% relative humidity Ratio: 0,4-1,0 Temperature range: 0.1-60.0℃ 32.0-140℉ Temperature accuracy: ±0,5 ℃ Temperature resolution: 0,1°C/°F Automatic shutdown: 5 minutes Batteries: 3 x 1,5 LR 44 (batteries included) Size: Approx. 183 x 37 x 37 mm / 7,2 x 1,5 x 1,5 inches Display: Backlight Waterproof: IP67 Power Consumption: 2,9 mA Contents of the pack: 1 x Water Quality Tester 3 x pH buffer powder 1 x User Manual Why choose our digital pH meter? 1. 5-in-1 function, which can be used to test PH/TDS/EC/salinity/water temperature to ensure the safety of drinking water. 2. Pocket design is convenient to carry. 3. The green backlight allows you to read the digital test in low visibility. 4. Highly accurate pH tester for accurate measurement. 5. Automatic temperature compensation and automatic calibration. 6. Easy operation, just remove the protective cover and immerse the pH-meter electrode in the solution. 7. It can be used to test water quality in many situations. 1. Instruments should not be calibrated in the air. 2. If the device is not used for a long time, it should be calibrated before use. 3. When finished, clean the electrode with clean water.