Fast and accurate reading: Just turn on, dip in liquid and read the display, no need to work with color charts or test strips. Large digital display makes it easy to read. Large LCD screen with great waterproof performance makes it easy to read the displayed value. Auto calibration: 2-point auto calibration, automatic identification of standard liquid, advanced electrode. The sensitive sensor makes direct contact with the tested solution, quickly and accurately. Automatic temperature compensation: No need to worry about the effect of temperature change on pH, the meter will automatically adjust for temperature. Full pH range from 0 to 14 with 0.01 pH resolution. Easy to use: Simply remove the protective cap and immerse the pH meter electrode in the solution, then press the button to measure. Versatile: Ideal for pH testing at home and in the lab, including drinking water, swimming pools, aquariums, hydroponics, and more.