Feature:1. The digital ph meter has many uses and is very suitable for testing the pH value of pure water, swimming pools, wine, hydroponics, etc.2. This ph tester can read super fast and accurate, which is convenient for you to judge the data.3. The entire measuring range of this digital phmeter is 0.014.0 pH, and different data can be obtained.4. Automatic temperature compensation: The ph tester will automatically adjust according to temperature changes.5. This ph test pen is small and easy to carry, and can be used for testing at any time, with simple operation.Specification:Item Type: PH Meter.Material: ABSPurpose: PH value testBattery: LR44 button batteryBattery Type: Lithium Battery1-3: Highly Acidic Substance4-6: Acidic Substance7: Neutral8-11: Alkalinity12-14: Extremely High AlkalinityPackage List:1 x PH Testing Machine2 x PH Reagent1 x Slot Screwdriver1 x User ManualNote:The ph tester should be calibrated frequently, especially after long periods of nonuse.