General description This 7 in 1 Water Quality Tester is designed for precise measurement of various water quality parameters including pH, TDS, temperature, EC, salinity, and specific gravity (SG). It features a high precision titanium electrode probe that ensures accurate readings and stable values, making it suitable for a wide range of applications such as drinking water testing, aquaculture, and swimming pools. Technical specifications Measurement Parameters: pH, TDS, Temperature, EC, Salinity, SG, ORP pH Range: 0-14.00 pH, Resolution: 0.01 pH, Precision: ±0.05 pH TDS Range: 0-10,000 ppm, Resolution: 0.1 ppm, Accuracy: ±2% FS EC Range: 0-10,000 µS/cm, 10.01-19.99 mS/cm, 20.1-400.0 mS/cm (automatic conversion), Precision: ±2% FS Salinity Range: 0.01%-25.00%, Resolution: 0.01%, Precision: ±0.1% (0.01-5.00%), ±1% (5.1-25.0%) SG Range: 1.000-1.222 ORP: ±999 mV Temperature Range: 0.1-60.0 °C (32.0-140 °F) Water Resistance Index: IP67 Weight: approx. 162 g (5.7 oz) Power Supply: 3 x