Accuracy 0.01 LCD Digital PH Meter Pen For Water Tester Aquarium Pool Automatic Calibration Water Quality Purity Tester Features: ➤Easy to Use: Simply immerse the pH meter electrode in the solution to be tested, readings are quickly display on a large lcd display ➤Wide Application: Ideal instrument for any aquarium, the fishing industry, swimming pools, spa, school laboratories, food & beverage, drinking water etc. ➤Auto Calibrated: Features in-built calibration with 3 buffer powders. Just press a ""ON"" button to finish the calibration. This pH meter is factory calibrated. Users can use it directly. .
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