Medical Dictionary
Nessler's reagent
noun Ness·ler's reagent \ˈnes-lərz-\
Medical Definition of NESSLER'S REAGENT
: an alkaline solution of potassium mercuric iodide used in chemical analysis especially in a test for ammonia in aqueous solution (as when obtained from water, blood, or urine) with which it forms a yellowish brown color or precipitate—called also Nessler's solution
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