PH Meter Tester Water Pool - Exqline 0.05 Accuracy ATC Function Auto Calibration for Aquariums Swimming pools Laboratory Tap water Beverage Model: PH-02 PH VALUE AFFECTS HEALTH: The pH is a measure of the acidity of the water. With the scale goes from 0 to 14, where pH 7 is neutral. If the pH is above 7, the water is basic; if it is below 7 the water is acid. Therefore, a PH tester is very necessary to know the value during our daily life. THIS IS A SMART PH TESTER: Automatic Calibration Button - No Adjustment Screwdriver Needed, Easy to calibrate with pH 4 & 6.86 buffer packets included. PRECISELY MEASUREMENT: Full pH 0-14 measurements; 0.01pH highly accuracy; 0.01 pH resolution. EASY USE & HANDHELD SIZE: Just turn the PH tester on, dip in liquid and read display, nothing could be easier. Pocket sized, handheld pH meter is lightweight, compact, conveniently fits in your pocket or bag and goes anywhere. A PH TESTER CAN BE WIDELY USED: Ideal for household or laboratory use; Great for all pH testing applications including aquariums, swimming pools, tap water, beverage RO system, Spa, or hydroponics...etc.