PH Test Strips, Universal Application pH 0.0-14.0, PH ...
2020-9-24 · Each pH strip has four pieces of pH paper that will change color after being submerged in a solution. Each piece of pH paper has its own pH range and will change color accordingly. After submersion, the strips can then be compared against the color chart on the case to determine the pH. This method allows for fast and accurate pH readings.
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