litmus paper
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English[edit]
Noun[edit]
litmus paper (countable and uncountable, plural litmus papers)
- (chemistry) paper 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.
Translations[edit]
Translations
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Further reading[edit]
- litmus paper on Wikipedia.Wikipedia