Patent ID: 6679274
Filing Date: 2004-01-20
Classification: B08B

Abstract:
A method for cleaning photographic chemistry product fouling including a proteinaceous portion and a non-proteinaceous portion from a piping system comprising the steps of:(a) flushing the piping system with water; (b) cleaning the piping system using a two-phase flow of a liquid and gas for a first time; (c) chemically cleaning the piping system with an aqueous bleach solution to remove the proteinaceous portion of the photographic chemistry product fouling; (d) chemically cleaning the piping system wit a functionalized ethyl acetate solvent to remove the non-proteinaceous portion of the photographic chemistry product fouling; and (e) cleaning the piping system using the two-phase flow of the hg aid and gas for a second time after the chemical cleaning steps to remove remaining residue from the piping system.