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Litmus Paper
Pocket-sized litmus test paper strips consists of dyed cellulose fibers to test whether a solution is acidic or basic.
Blue litmus paper turns red in acidic conditions (generally at a pH below 4.5).
Red litmus paper turns blue in basic or alkaline conditions (generally at a pH above 8.3).
Neutral solutions (like pure water) will not cause a color change on either red or blue litmus paper.
Pack Size: 100 strips