Last Updated
：2025/11/22
litmus paper
Noun
countable
uncountable
Japanese Meaning
リトマス試験紙：水溶性のpH指示薬を含む紙で、物質の酸性度やアルカリ性度を判定するために用いられ、酸性の場合は赤、アルカリ性の場合は青に変色する
（ plural ）
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(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.
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litmus paper
The chemist used a strip of litmus paper to quickly determine whether the solution was acidic or alkaline.
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The chemist used a strip of litmus paper to quickly determine whether the solution was acidic or alkaline.
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