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RIYAN PH Test Pen
Series of products: Pens
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RIYAN PH Test Pen
Can be simple to measure paper or cloth and other solid surface PH value and pen.
Note: In order to make a correct judgment, observe the following:
1, to compare colors in bright places.
2. In order to make a correct judgment, it is necessary to make a judgment in a short time (within 5 minutes).
3. It is difficult to make a correct judgment in the place where more volatile substances (acid, alkali) are produced.Method of use: Apply the drug solution and compare the color change of the applied area with the standard color chart attached to the test,
In order to determine the pH value.
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