Large Backlit Lcd Display Easy To Read: The Quality Counter Of Water, With A Large Backlit Lcd Screen, Is Far Superior To Other Screens, Allowing Compatible With Wider Data Reading And Nighttime Reading Angles.&Middot; Wide Range Of Uses: The Pocket Ph Meter Is An Ideal Ph Tester Compatible With Water, Swimming Pools, Aquariums, Hot Springs, Hydroponics, Food, Wine And Beer Making.&Middot; Fast And Accurate: Ensure Your Drinking Water, Swimming Pool And Regular Hydroponic Ph Have Perfect Ph Balance And Can Be Used ;S With An Accurate Ph Tester. The Ph Water Meter Has A Sensitive Electrode Sensor, Which Can Read The Accurate Ph Value.&Middot; Automatic Temperature Compensation: There Is No Need Compatible With S 'Worry About The Temperature Of The Liquid To Be Test, Because The Ph Tester Has A Built-In Automatic Temperature Compensation (Atc) Function, Which Can Accurately Determine The Ph Value Of The Sample.&Middot; [Easy Calibration]: The Ph Pen Has An Automatic Temperature Compensation Function, Which Can Be Adjusted According To Temperature And Quality. Of Water, And Can Provide A Ph Reading Almost Immediately. The Tester Can Also Use Buffer Powder Compatible With Testing.