General description This 5 in 1 Electronic pH Meter Tester is a versatile tool designed for testing the pH, TDS, EC, salinity, and temperature of water. It features a waterproof design (IP67) and a bright green backlit LCD display for easy reading in various lighting conditions. The portable pocket design makes it convenient to carry, while the 5-minute auto-off function helps conserve battery life. Technical specifications Measuring range: pH 0.00-14.00 (accuracy 0.01 pH) TDS: 0-10,000 ppm Salinity: 0.01% - 25.00% EC: 0-10,000 µS/cm, 10.1-19.99 mS, 20.1-400.0 mS/cm Temperature: 0 - 60 ℃ Response speed: 0.1s Calibration: Three-point calibration method (pH 4.01/6.86/9.18) Usage This multifunctional pH tester is suitable for a wide range of applications, including testing drinking water, swimming pools, aquariums, hot springs, aquaculture, and ponds. It is ideal for both home and laboratory use, ensuring the quality and safety of water in daily life.