litmus paper
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The best way to confirm that the solution is neutralized is with litmus paper.
From Seattle Times • Nov. 7, 2022
Watson recalls one telling advertising campaign: posters printed on litmus paper that said: “When acid rain is falling, you should see red” – offering a vivid illustration of the problem.
From The Guardian • Oct. 12, 2020
But that is not an immutable piece of parchment that judges can apply to laws like litmus paper.
From Time Magazine Archive
We are not dealing here," said Acheson, "with the kind of situation where we can go from one country to another with a piece of litmus paper and see whether everything is true blue.
From Time Magazine Archive
A package of blue litmus paper can be bought for a few cents at any drug store.
From Crops and Methods for Soil Improvement by Agee, Alva
