How to use a water tester digital Ph meter,calibration PH meter
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How to use a water tester digital Ph meter,calibration PH meter
Portable High Precision Water Tester Aquarium Digital Mini Ph Acidity Meter Pen type.www.cnhealthshining.com,what'sapp:richard 0086-18658896852 How to Calibration the pH meter? 1. Turn on pH meter 2. Disolve each buffer solution in 250 ml of distilled water. (at 25℃/77℉ temperature) 3. Immerse the electrode into the pH 6.86 solution. 4 ...
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