Litmus paper

noun

Word Frequency: 0.2

Definitions

1.nounPaper containing a water-soluble pH indicator composed of a mixture of different dyes extracted from certain lichens. The resulting piece of paper is used to test materials for acidity, turning red when acidic and blue when alkaline.

Synonyms

litmus test paper turmeric paper chromatography paper blotter acid paper paper chromatography absorbent paper linen paper blotting paper bromide paper toned paper

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