Nessler's reagent
[ nes-lerz ]
/ ˈnɛs lərz /
noun
an aqueous solution of potassium iodide, mercuric chloride, and potassium hydroxide, used as a test for the presence of ammonia.
Also called
Nessler's solution.
Origin of Nessler's reagent
First recorded in 1870–75; see origin at
nesslerize