
A substance added to a solution for the purpose of altering or controlling a process. Examples include wetting agents in acid pickles, brighteners or antipitting agents in plating solutions, and inhibitors.
Found on
http://www.encyclo.co.uk/local/20742

A substance added to a solution for the purpose of altering or controlling a process. Examples include wetting agents in acid pickles, brighteners or antipitting agents in plating solutions, and inhibitors
Found on
http://www.encyclo.co.uk/local/21115

1) Any material added to a charge of molten metal in bath or ladle to bring alloy to specifications, 2) reagent added to plating bath.
Found on
https://steelforge.com/literature/steelog-the-5000-word-metals-glossary/
No exact match found.