turmeric paper

turmeric paper

n.
Paper that is yellow from being saturated with turmeric and is used to detect the presence of alkalis, which turn the paper brown, or boric acid, which turns it red-brown.

turmeric paper

n
(Chemistry) chem paper impregnated with turmeric used as a test for alkalis, which turn it brown, and for boric acid, which turns it reddish brown