Terence J Small

US Patent:

58980024, Apr 27, 1999

Filed:

Aug 22, 1997

Appl. No.:

8/916198

Inventors:

Terence P. Small - Aldan PA

Assignee:

BetzDearborn Inc. - Trevose PA

International Classification:

G01N 2179

US Classification:

436 6

Abstract:

A method for removing ferric-ferrous oxides from a liquid containing ferric-ferrous oxides and ferrous ions and to a method for determining the amount of ferrous ion in a liquid. The invention has particular utility for use in a method to accurately determine the corrosion rates of ferrometals in contact with aqueous liquids by filtering ferric-ferrous oxides from the aqueous liquid prior to determining the ferrous ion content of the aqueous liquid.