Features: 3-in-1 water quality test: The meter has a three-in-one function, which can measure PH, Total Dissolved Solid and temperature with high precision at the same time. All-round measurement of water quality to ensure healthy water quality. 0.05 pH Accuracy and 3-Point Calibration: With high sensitivity probe, the PH meter's full measurement range of 0.01-14.00pH, 0.01 pH resolution. And the pH meter uses a 3-point calibration method, put the electrode into standard solutions of pH 4.00, pH 6.86, and pH 9.18 to ensure the accuracy of your measurements. Backlit LCD Design: The water quality meter features a green Backlit LCD to help you see the measurement clearly in any situation. Automatic Temperature Compensation: No longer need to pay attention to the temperature of testing liquid, the meter can accurately determine the pH value of the sample in the temperature range of 0-60(32-140), so as to solve the inaccurate problem caused by changing the liquid temperature. Wide Application: Ideal for household and laboratory water testing applications, including drinking water, swimming pool, spa, pond, aquariums, hydroponics, etc. Specifications: Item name: Water Quality Tester Main material: ABS Color: Grey and white Battery: 3*LR44 button batteries (Included) Unit conversion: / Measuring Range: pH: 0.0114.00 pH; Total Dissolved Solid: 010000 ppm; Temp: ATC 060(32140) Resolution: PH: 0.01 pH; Total Dissolved Solid: 1 ppm; TEMP: 0.1/ Accuracy: PH: 0.05 pH; Total Dissolved Solid: 2% FS; TEMP: 0.5 Product size: 185*37*24mm Product weight: 110g Note: *Please read carefully enclosed instructions before operating the tester. *There could be some deviations due to manual measurement or slight color difference owing to photographing condition. Thank you for your understanding. Package information: Package weight: 200g Package size: 23.6*8.3*5cm Package list: 1*Water Quality Tester 1*User Manual 3*PH Buffer Tool