-40%
Blue Litmus Paper, Pack of 100
$ 7.96
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Description
Our eBay StoreBlue Litmus Paper, Pack of 100
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. Sold in boxes of 100 strips of paper.
