5-in-1 digital water quality tester (pH/TDS/salinity/temperature/EC) with backlit LCD screen suitable for testing the quality of drinking water, swimming pools and spas/jacuzzis.

【5-in-1 Water Quality Tester】This multi-parameter tester combines five functions in one device: salinity, TDS, conductivity (EC), pH, and temperature measurement. It meets various water analysis needs while saving you time and money.

【Versatile TDS Tester】An essential tool for improving your quality of life, this digital tester is suitable for many applications: drinking water analysis, pool water monitoring, pH control in reverse osmosis/deionization (RO/DI) systems, as well as for aquariums, spas, hot tubs, and hydroponics.

【Automatic Temperature Compensation (ATC)】Water temperature influences pH measurements; This device operates within a range of 0°C to 60°C (32°F to 140°F) and incorporates automatic temperature compensation to ensure accuracy, eliminating errors due to temperature fluctuations. [Salinity Tester with Three Display Modes] Supports three units: ppm, ppt, and %. Salinity range for swimming pools: 0–9999 ppm; seawater: 10–200 ppt (1 ppt = 1000 ppm; the device automatically switches to ppt when the value exceeds 9999 ppm); food-grade salinity: 0.01%–25%. Avoid complex unit conversions and calculation errors with its intuitive and convenient readability. 【High-Precision pH Tester】Equipped with a highly sensitive glass probe, this tester covers a pH range of 0 to 14 with a resolution of 0.01 pH. Once the measurement has stabilized, simply press the HOLD/TEMP button to lock the value for easy viewing. Its simple and user-friendly design ensures an excellent user experience.