litmus paper


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Related to litmus paper: phenolphthalein

litmus paper

[′lit·məs ‚pā·pər]
(materials)
White, unsized paper saturated by litmus in water; used as a pH indicator.
References in periodicals archive ?
A solid acid catalyst breaks down TATP into detectable components that cause the pigments to change colour, like litmus paper.
Conceptually similar to Litmus paper, the color Pressurex[R] turns is directly proportional to the amount of force applied.
However, it is highly durable and can be used on an industrial scale and unlike litmus paper, which displays acid as red, ITS fibresmart changes from green to fluorescent yellow, allowing it to be seen from a distance, providing an early warning of potential leaks and seepage.
With a 1in screen, it's modelled on a slip of litmus paper and comes in rose, purple and blue.
The simplest and the most known method is measurement with litmus pigments or litmus paper.
9 : a chemical substance (as lime or ammonia) that reacts with an acid to form a salt and turns red litmus paper blue
YP-U4's design concept is 'litmus' which is inspired by colour gradation on litmus paper.
If my litmus paper is sensitive to the acidity of public reaction, I'd say sympathy for Fallon is waning by the day.
That's what I call chemistry: not all that nonsense with magnesium ribbon, Bunsen burners and litmus paper - none of which I've come across since leaving school.
They have even resorted to placing litmus paper on the end of sticks and shoving them under doors to determine if they should enter a room, Funk noted.
Interpretation is conceptually similar to analyzing Litmus paper results.