The large LCD screen with excellent waterproof performance allows you to easily read the displayed value. Automatic calibration in 2 points, automatic identification of standard liquid, 5 seconds to complete calibration Advanced Korean Electrode The sensitive sensor comes into direct contact with the tested solution, fast and accurate Automatic temperature calibration No worries about the effect of temperature change on pH, PH value will automatically adjust the temperature Easy to use: simply remove the protective cap and dip the electrode from the pH meter into the solution and press the measuring button.