Usage Tips:[High Accuracy Ph Meter]: This digital PH meter with Built-in a sensitive electrode sensor, simply "ON" and the result of the PH appear on the digital ph tester screen in a few seconds. Measuring the full PH range from 0.00 to 14.00 with an accuracy of ±0.01. [Automatic Calibration water meter]: Digital PH meter has an automatic calibration function that can be adjusted according to water temperature and quality, and the PH reading can be obtained by waiting a few seconds in the testing. You can also calibrate the digital ph meter with -touch button "CAL" using Calibration Buffer Powder. [Automatic Temperature Compensation PH Pen]: No more need to about the temperature of testing liquid. The digital PH meter is equipped with an auto temperature compensation function (built-in ATC) that adjusts to water temperatures and water quality. [Widely Application Ph Trster]: Water PH meter for water can tell you the acidity and alkalinity of water the health of drinking water and keep it in perfect PH balance. You can test drinking water, swimming pools, aquariums, hydroponics, wine and beer and so on. [Easy to use water ph tester]: Just remove the protective cap and immerse the digital PH meter electrode in the solution and the button to be measured. the heck out of trying to see the colors of a litmus strip. When this water PH tester is a long period of inactivity or after frequent use, you can calibrate the tester with an auto-calibration button for proper calibration. Material: plastic colour: grey Package Contents: 1 x PH Meter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.