The water testing tool is an excellent tool for water quality testing. Selected good material, not easy to deform or break. Clear display screen, making the reading easy. Good workmanship the precise result and . Features - Color: Green. - Material: Plastic. - Size: Approx. 15.90X3.40X1.60cm/6.25X1.34X0.63in. - Fits multiple uses, drinking water test, swimming pool, laboratory, Hydroponics, aquarium, well water, etc. - water quality tester. Five different measurement needs can by one tester. - Not only can it be convenient for you, but also saves your time and money. - An absolutely helpful water tester for your safer daily life. - Suitable for home, hotel, restaurant, family diet, food processing, etc. Specification - EC: Range: 0 to 10000uS/cm 10.01-19.99mS 20.1-400mS/CM. Resolution: /cm; 0. /cm. Accuracy: ±2% - Total Dissolved Solids: Range: 0 to 1000ppm 1000ppm to 10000ppm 10.1 to 200.0ppt (automatically ). Resolution: 1ppm; 0. . Accuracy: ±2% - : Range: 0.00 to 25.00%. Resolution: 0.01%. Accuracy: 0.01-5.00% (±0.1%) 5.10-25.00% (±1%). - : 1.000-1.222. - Calibration: EC: Three-point calibration is optional (1413uS 12.8 111. ). - Temperature compensation: ATC. - Operating environment: 0 to 80.0ºC (32.0-176F); <90%. - Coefficient: 0.5. - Temperature range: 0.1-80.0ºC, 32.0-176ºF. - Temperature accuracy: +0.5ºC. - Temperature resolution: 0.1ºC/ºF. - Automatic shutdown: 5 minutes. - Battery: 3 1.5V LR44 button batteries (INCLUDED). - Screen size: 28 x 17mm. - Display: Support backlight. - Battery: indicator. Package list: 1 Quality Tester