5 in 1 Water Quality Tester Digital PH Salinity Temperature TDS EC Detection Meter Portable Pen Type Item Type: 5 in 1 Water Tester Material: ABS Power Supply Battery: 3 x LR44 button battery, single 160mAh (included) Basic Parameters: PH: Range: 0.00-14.00pH Accuracy: 0.01pH Resolution: ± 0.05pH EC: Range: 0-200000μS/cm, 10.1-19.99mS, 20.1-400.0mS/cm Accuracy: 1μS/cm, 0.1mS/cm Resolution: ±2%F.S TDS: Range: 0-200000ppm, 10.1-200.0ppm Accuracy: 1ppm, 0.1ppt Resolution: ±2%F.S Salinity: Range: 0.01%-25.00%, 0-10000ppm, 10.1-200.0ppt Accuracy: 1ppm, 0.1ppt, 0.01% Resolution: 0.01%-5.00%(±0.1%), 5.1%-25% (±1), ±2%F.S Temperature: Range 0-60℃, 32-140℉ Accuracy 1℃, 1℉ Resolution ±0.5℃ ATC: 0-60℃ Automatic Shutdown: No operation for 5 minutes Use: Aquarium, aquaculture, soilless cultivation, swimming pool and hot spring, school laboratory, chemical industry, food or beverage manufacturing, textile printing and dyeing, paper or pulp bleaching, printing, cooling tower, boiler, cleaning or sewage treatment, etc Application: Domestic drinking water, swimming pool, aquaculture, fish tank, laboratory.