Ulisem 5-in-1 electronic pH tester for testing pH, TDS, EC, temperature, salinity, suitable for drinking water and swimming pools

TDS 0-10,000 ppm, 10.1-200.00 ppt, EC 0-10,000 µS/cm, 10.1-19.99 mS, 20.1-400.0 mS/cm, salinity 0.01%-25.00%, and temperature 0-60°C. Waterproof rating: IP67. High quality for excellent corrosion resistance. This pH meter uses a three-point calibration method, calibrating the electrode on pH solutions of 4.01/6.86/9.18 to ensure measurement accuracy. A 5-minute cool-down period saves power and extends battery life. Operating temperature range: 0°C to 60°C (32 to 140°F). The pH tester automatically recognizes the calibration solution for easy reading. in the laboratory, and can be used to test the quality of drinking water, swimming pools, aquariums, spas, aquaculture, ponds and well water indoors or on vacation, ensuring water safety in daily life.