Digital PH Meter High Precision Pocket Water Quality Tester Accurate Testing for Drinking Water Aquariums Swimming Pools 55KFOOTDTY  100% brand new and high qualityFeatures：Automatic calibration: The PH meter has automatic temperature compensation that adjusts for water temperature and water quality, providing a pH reading almost instantly.Wide use: Suitable for testing PH value in drinking water, swimming pools, aquariums, spas or hydroponics.How to use: First remove the protective cover, first clean the electrode of the PH meter with distilled water, and use filter paper to absorb the moisture attached to and around the electrode. Then, tap "NO/OFF" to turn on the power, insert the instrument into the solution to be tested, make the electrode under test submerged in the solution, and read the number after the algebraic value is stable.High sensitivity glass probe: special material glass electrode probe, the signal transmission is accurate and fast.Power supply: Powered by a button battery, it is easy to replace the battery, durable, and needs to be recalibrated after replacing the battery.Specification：Material: ABSSize: approx.15.5x3.1x1.8cm/6.10x1.22x0.71inTest range: 0-14.0PHAccuracy: 0.01PHError: ±0.05PHBattery: 2x1.5V (LR44)Warming: 0℃-50℃Color: YellowQuantity: 1PcNote：Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!Package Contents：1xDigital PH Meter (other accessories demo in the picture is not included.)