Litmus indicators roll blue (100 pcs)
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Heliotrope indicator which are used to check the acidity of a solution and are available in a package of 100 pieces.
The Litmus heliotope indicator is used to test the acidity of a solution. The blue light will turn red or pink when it comes in contact with an acidic solution below pH 7.
The product is available in a plastic container with 100 pieces.
