- 1.7-in-1 Multifunctional Water Quality Tester for swimming pools with seven measurement functions: pH, salinity, TDS, EC, S.G., ORP, and water temperature. Large backlit LCD screen shows combined readings. One-touch operation eliminates frequent mode switching, saving up to 50% of testing time. Easy to use and beginner-friendly. - Precise water monitoring for pool use: quick readings of pH and salinity. The TDS meter helps maintain salinity between 2700-3500 ppm and pH between 7.2-7.8, ensuring clear water while minimising water quality issues. Reliable tool for daily pool maintenance. - Multiple applications: not limited to pools; suitable for aquariums, spas, hydroponics, hot tubs, irrigation systems, ponds, and drinking water. Supports both PPM and PPT units, accurately measuring aquarium pH (7.8-8.5) and salinity (22-35 PPT), ideal for aquatic hobbyists. - Easy operation and clear readings: high-resolution backlit LCD and intuitive buttons provide clear results in sun or night. Simply insert the probe into the water for instant readings with no complicated setup. Lightweight and portable for home or outdoor testing.