The 5-in-1 Digital Water Quality Tester is a high-precision device that measures pH, temperature, TDS, EC, and salinity, making it ideal for various applications. It features a pH range of 0.01–14.00, temperature detection from 0.1°C to 60.0°C, TDS measurement up to 10,000ppm, EC ranges up to 400mS/cm, and salinity testing up to 25.00%. Additional functions include a hold feature, auto-temperature compensation, and calibration solutions (pH 4.01, 6.86, and 9.18). Its compact design suits fieldwork and lab use, serving industries like aquaculture, drinking water, swimming pools, food processing, and agriculture. This tester ensures accurate, reliable water analysis for professionals and enthusiasts.