0.01 PH High Precision PH Tester Water Quality Tester Pen 0.00-14.00 PH Measuring Range PH Drinking Water MeterOOTDTYComs: & 3 Different Colors Available, Choose The Color You Prefer. PH tester bright backlit LCD display, easy to use no matter day or night environment, and accurate measurement and clear display results. The pH meter has a built-in (ATC) automatic temperature compensation function, so it no longer has to worry about the temperature of the test liquid. The PH tester has a sensitive sensor electrode, just press "ON", just a few seconds for the result to appear on the screen, read the exact pH levels. The included detailed manual will show you how to get the best accurate and stable reading. Very suitable for home or laboratory use. It is suitable for testing the pH balance of drinking water, swimming pools, aquariums, reverse osmosis systems, hot springs or hydroponics. It is suitable for a wide range of applications. Specification: Material: Plastic Size: 5.5x3.1cm/ 6.1x1.2 inchColor: Blue/Green/YellowPackage Included: 1x PH Tester2x Powder Calibration Tester1x User ManualNote: Please allow 1-3cm error due to manual measurement. Pls make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.