Features: lt; br/gt; Automatic temperature compensation automatically takes temperature changes into account. What's more! The PH meter does not require any adjustment screwdrivers, just complete the calibration with the auto-calibration button. lt; Br/gt; High accuracy: make sure your pool, normal ph hydroponics. Or even drinking water has the perfect pH balance and is safe to use with pH accuracy digital ph-metr.lt; br/gt; This digital ph meter is suitable for testing the pH value of drinking water, swimming pool, aquariums, spa, hydroponics, food, wine, brewing, milk, cosmetics, chemical, metallurgical, environmental protection, pharmaceutical, biochemical and other pH.lt value solutions; br/gt; Large LCD display makes the reading clearer and easier, stable within 4-5 seconds. This pH water meter is cost-effective and suitable for various industries that require pH.lt testing; br/gt; Measurement range: 0.00-14.00pH, resolution: 0.01ph, accuracy: ± 0.01ph.lt; br/gt; Package Included:1 x PH3 Meter x Calibration Solution1 x User ManualSpecifications:Material: ABSDeach: About 155x29mmx1 6/6.1x1.1x0.6 inchColor: Blue/Red/YellowWarm TipsStep 1: turn on the open pH meter, clean the electrode in distilled waterStep 2: immerse the electrode in a standard pH 6.86 buffer solutionStep 3: press the "CAL" button. Wait until the digital display is 6.86pH and stableStep 4: clean the electrode in distilled water and dry it, immerse the electrode in a standard Ph 4.00 buffer solutionStep 5: press the "CAL" button. Wait until the digital display is 4.00pH. Then perform a pH 4.00 calibrationStep 6: clean the electrode and dry it, insert the meter into a standard PH 9.18 buffer solution. Please check if the reading is correct between 9.17-9.19pH Weight: 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. OOTDTY