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GSC International PHTP-01-12 Red Litmus Paper, Case of 12 Packs of 100

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  • $ 21.73

A solution's pH determines whether it is acidic or alkaline. Its pH value can be roughly gauged using these test papers.

Our litmus papers will indicate whether a solution is alkaline or acidic. Litmus is a water-soluble mixture of different dyes extracted from lichen. Dyeing filter paper either red or blue with this ink creates one of the oldest forms of testing alkalinity and acidity. Blue litmus paper turns red under acidic conditions and red litmus paper turns blue under alkaline conditions. Sold in boxes of 100 strips of paper.

We also carry wide-range pH test paper, which is useful for finding the pH value (1-14) of a solution.


Our products are not toys. Use in a laboratory or educational setting only. Not for children 13 and under.