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Precision pH testing paper strips.
it's 20 packs per lot.
pH range from 1-14.
pH < 7 = acidic, pH 7 = neutral, pH > 7 = alkaline.
Simply put a drop of the solution you want to test onto the test paper, and test paper will turn color according to the pH of the solution. Compare the paper color and find out the pH value of the solution.
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Free shipping 12-25 working days for delivery
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