Nessler's reagent

[ nes-lerz ]

/ ˈnɛs lərz /

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Definition of Nessler's reagent

noun

an aqueous solution of potassium iodide, mercuric chloride, and potassium hydroxide, used as a test for the presence of ammonia.

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On the farm, the feed for chicks is significantly different from the roosters’; ______ not even comparable.

Also called Nessler's solution.

First recorded in 1870–75; see origin at nesslerize

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