paper treated with turmeric: used to indicate the presence of alkalis, which turn it brown, or of boric acid, which turns it reddish-brown.
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How to use turmeric paper in a sentence
Place a strip of turmeric paper in this solution for a few minutes, then remove and dry it.
If boric acid either free or combined is present, the turmeric paper will be turned to a cherry-red color.
turmeric paper may be prepared by dipping pieces of smooth, thin filter paper in a solution of powdered turmeric in alcohol.
Soak a piece of turmeric paper in the extract, and if boric acid is present the paper will be colored rose-red when it is dry.
Dissolve the residue in a small quantity of hot water and moisten a piece of turmeric paper with the solution.The Elements of Bacteriological Technique | John William Henry Eyre
British Dictionary definitions for turmeric paper
chem paper impregnated with turmeric used as a test for alkalis, which turn it brown, and for boric acid, which turns it reddish brown
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012