Significats de add ammonium en anglès

Render alkaline with ammonia, and add ammonium sulphide till the precipitate is dissolved.

If the smell of ammonia has disappeared, again add ammonium hydroxide in slight excess, and 3 cc.

PROCEDURE.-Tothe filtrate from the insoluble residue add ammonium hydroxide until the solution just smells distinctly of ammonia, but do not add an excess.