Blue Litmus Test Paper Acid Indicator 100 Strips

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R652175
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Blue Litmus Paper is a P.H. tester for Acid with pH between 4.3-6.8. 100 strips per vial. Blue litmus paper turns red or pink for acidic solutions (pH values lower than 7 (Neutral). This is used in many science projects. Each strip measures approx .25 inches x 1.75 inches.