Digital PH MeterAUTO CALIBRATION: PH meter has an auto temprature compensation feature that adjusts to water temperatures and water quality to give pH readings almost instantly. As well, you can calibrate the tester with one touch button using Buffer Powder. WIDE USE: Pocket Size PH Meter is the ideal test kit for home and laboratory uses. Ideal use to test for water, drink, Kombucha hydroponics, food, wine and beer making and more. With a high accuracy of 0. 01 pH,