Method for flushing an undesired precipitate from apparatus surfaces
AssigneeEastman Kodak Company
InventorsCharles S. Christ, Albert R. Szembrot
Life of this patent
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Abstract
A method of removing undesired precipitate from the surfaces of an apparatus; wherein the apparatus is used in a process for removing silver from silver bearing photoprocessing solutions and the process includes the step of mixing a mercapto-s-triazine, or a water soluble salt thereof, with a silver bearing photoprocessing solution, thereby causing formation of the undesired precipitate and a precipitate of silver mercapto-s-triazine, said method comprising flushing inner surfaces of the apparatus with an aqueous solution having a pH of at least 9.8 thereby solubilizing the undesired precipitate.
Claims5
A method of removing undesired precipitate from the surfaces of an apparatus;
- wherein the apparatus is used in a process for removing silver from silver bearing photoprocessing solutions and the process includes the step of mixing a mercapto-s-triazine, or a water soluble salt thereof, with a silver bearing photoprocessing solution, thereby causing formation of the undesired precipitate and a precipitate of silver mercapto-s-triazine, said method comprising flushing inner surfaces of the apparatus with an aqueous solution having a pH of at least 9.8 thereby solubilizing the undesired precipitate.
Dependencies are inferred from the claim text.