Universal Indicator Paper (Reel Johnson)Universal Indicator Paper pH 1 14. It is used to test solutions for a pH reading to indicate the acidity alkali. Open the reel and remove some of the paper, using the paper you should test your solution leaving the paper in the solution for around 1 2 seconds.
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Universal Indicator Paper pH1 - 14. It is used to testsolutions for apHreading to indicate the acidity / alkali. Open the reel and remove some of thepaper, using thepaperyou shouldtestyour solution leaving the paperin the solution for around 1-2 seconds.