[Convenience use] 5 seconds know the water quality, accuracy, faster. This Combo game of TDS PH EC Temperature. Besides, it has the best price, reliable quality, all make it your first water quality test. [How accurate is it? ] pH resolution is 0.01pH, accuracy 0.01pH.TDS: 0 ~ 9990ppm, Conductivity: 0 ~ 9990us/cm, accuracy: 2%. [Pocket Portable] Small size but suitable for testing the pH balance of drinking water, swimming pool, aquarium, reverse osmosis system, spa, or hydroponics. [Wide Application] Ideal for pH testing at home and in the laboratory, including drinking water, electroplating fluid, boiler water, aquarium water, swimming pool water, photographic rinsing fluid, well water, deep water, aquaculture, food processing and more. Little money to know water quality The TDS pH meter set is a professional level water tester. Application: production and consumption of pure water, tap water, well water, sea water, aquarium, swimming pool water , soil, aquaculture, food processing, etc. PH meter Measuring range: 0.00 - 14.00 pH Resolution: 0.01 pH Accuracy: 0.01 pH Automatic temperature compensation: 0 - 60/32 - 140 Calibration: two-point automatic calibration button Button battery: 2 x 1.5V LR44 Dimension: 155mm * 31mm * 18mm Weight: 50g TDS meter Lock function - makes reading and recording easy, press HOLD button then remove from test solution. 4 Display Modes: Press SHIFT key: TDS - ppm & C, EC - s / cm & C, TDS ppm & F,EC - s/cm & F. 5 minute auto-off function so the battery doesn't run out. Measuring range: Conductivity: 0 - 9990 s/cm TDS: 0 - 9990 ppm (parts per million) Degrees Celsius: 0.1 - 80.0CFahrenheit: 32.0 - 176.0F Accuracy: 2% Net weight: 55g Size: 154 x 14 x 30 mm