Wide Use: The digital pH meter has many uses and is very suitable for testing the pH value of pure water, swimming pools, wine, hydroponics, etc. It can be used to test the pH balance in drinking water, aquarium, RO system, spa, or hydroponics. Easy to Use: The pH tester can read very quickly and accurately, allowing you to judge the data. Turn on the switch, put the probe into the water to stir (make the small glass ball fully contact with the liquid), and read the value after the value is stable. Wide Measuring Range: The entire measuring range of this digital pH meter is 0.0-14.0 pH, and various data can be obtained. Basically, all environments that need to test the pH value can use the tester to obtain accurate data. Automatic Temperature Compensation: Don't worry about the temperature of the measured liquid. The pH meter has the function of automatic temperature compensation, it will automatically adjust according to temperature changes. Mini PH Pen: The mini PH test pen is small