High Precision - Integrated With A Sensitive Electrode Sensor, Our Ph Tester Measurement Range Is 0.00 To 14.00 Ph (0.01 Ph Resolution); Accuracy: +0.01Ph(@ 20) /&Plusmn;0.02Ph, Allowing You To Test Your Liquid Quickly And Accurately.Automatic Calibration &Ndash; Calibrated Factory, But Recalibration Is Necessary In Case Of Long Period Of Inactivity. Or After Frequent Use. Ph 4.01/Ph 6.86/Ph 9.18 Calibration Powders Are Included. Press The Auto Calibration Button, The Tester Will Identify The Calibration Solutions Automatically.Automatic Temperature Compensation - Thanks To The Built-In Automatic Temperature Compensation (Atc), Our Ph Tester Can Accurately Test The Ph Value Of The Sample At Any Temperature Within The Range Of 0 To 50, No Need To Worry About Test Liquid Temperature.Quick Results And Compact Size - No More Consuming Paper Strips Or Other Inaccurate Ph Test Chemicals , It Only Takes A Few Seconds For Your Result To Appear. Screen. The Lightweight And Portable Size Allows You To Easily Carry It In Your Pocket And Measure Anywhere.Widely Used; - Ideal For Indoor Use. Home Or In The Laboratory. Can Be Used For Testing Drinking Water, Swimming Pools, Ph Balance In Aquarium, Hydroponics, Bathtub, Ro System, Spa, Wine, Beer And Any Other Liquids, Or Wherever You Need To Test Ph Value And Get Accurate Data.