Are you looking for a reliable and convenient water quality test tool? Do you want to make sure that your drinking water safer? If your answer is yes, this product will be a wise choice for you. This is a water quality test tool, which is made of for the use. Features - Color: Green. - Material: Plastic. - Size: Approx. 15.90X3.40X1.60cm/6.25X1.34X0.63in. - Comes with a protective cap, which can serve you for a long time. - Simple and convenient function switching with clear and simple readings. - This water tester is using 5-in-1 design, which can be used for testing , S.G, EC, temperature, total dissolved solids. - Widely applied in sea water, aquarium, swimming pool, etc. - Lightweight and portable, more convenient to store and carry out. 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