The Collaborative International Dictionary of English v.0.48:

Nesslerize \Ness"ler*ize\, v. t. [From Nessler, the chemist.]
   (Chem.)
   To treat or test, as a liquid, with a solution of mercuric
   iodide in potassium iodide and potassium hydroxide, which is
   called Nessler's solution or Nessler's test, and is used to
   detect the presence of ammonia.
   [1913 Webster]