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PH test pen is widely used in water purification, tap water, domestic water and various liquid pH test. PH value of 7.0 is neutral, below 7.0 is acidic, above 7.0 is alkaline. PH test pen steps:
1. Remove the protective cover PH test pen.
2. First with distilled water PH test pen electrodes and attached electrodes will be attached with filter paper moisture on dry.
3. Press the switch through the end of the pen, the PH test pen electrode is inserted into the test liquid.
4. The solution was stirred gently and wait a minute or so, read the PH test pen display.
5. After use, rinse the electrode PH test pen, turn off the switch, put on protective sleeve.
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