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Related to litmus paper: phenolphthalein
An unsized white paper impregnated with litmus and used as a pH or acid-base indicator.
a strip of paper impregnated with litmus, used as a chemical indicator.
Paper impregnated with litmus, a lichen-derived powder that changes color according to the acidity or basicity of a substance it comes into contact with. Litmus paper is thus used to test for acidity or basicity.
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|Noun||1.||litmus paper - unsized paper treated with litmus for use as an acid-base indicator|
litmus, litmus test - a coloring material (obtained from lichens) that turns red in acid solutions and blue in alkaline solutions; used as a very rough acid-base indicator
paper - a material made of cellulose pulp derived mainly from wood or rags or certain grasses