bn:00051564n
Noun Concept
Categories: PH indicators, Paper products
EN
litmus  litmus test  litmus paper  azolitmin  erythrolein
EN
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 WordNet 3.0
English:
chemistry
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EN
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 WordNet 3.0 & Open English WordNet
Litmus is a water soluble mixture of different dyes extracted from lichens. Wikipedia
Water-soluble mixture of different dyes extracted from lichens. Wikipedia Disambiguation
A dyestuff extracted from certain lichens, that changes color when exposed to pH levels greater than or less than certain critical levels. Wiktionary
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. Wiktionary
A simple test for the acidity or alkalinity of a substance, using litmus paper. Wiktionary
WordNet 3.0 & Open English WordNet
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