Usage Tips:High Precision Measurement ph tester has a measurement range of 0-14 PH with a resolution of 0.01 PH. Compared with the traditional PH test paper, the operation is simpler and the measurement results are more accurate. Automatic temperature compensationThe PH meter has automatic temperature compensation ( built-in ATC), which can automatically compensate for temperature differences based on changes in water temperature. Working Temperature: 0-60. Professional DesignThe electronic ph tester is equipped with a precision glass bulb electrode temperature sensor for increased response speed the LCD display is designed for easy reading of the measurement results. Wide range of uses pH meter can be widely used in: drinking water, aquariums, swimming pools, hydroponics, food acid-base measurement, etc. Low Power ConsumptionThe ph meter tester is powered by 1x3V CR2032 battery, which is more energy-saving. The product is small in size and easy to carry.