Patent ID: 7073522

Claim:
A cleaning system comprising: a. a tank-type cleaning vessel; b. an article integrated with and disposed within the tank-type cleaning vessel and having a first article surface and a second article surface, the article dividing the tank-type cleaning vessel into a first vessel portion defined, at least in part, by the first article surface and a second vessel portion defined, at least in part, by the second article surface; c. a contamination layer disposed on the first article surface; d. an etchant liquid contained within the first vessel portion and wetting the contamination layer, the first vessel portion filled to a first level with the etchant liquid; and e. a second liquid contained within the second vessel portion and separated from the first vessel portion by the article, the second vessel portion filled to a second level with the second liquid; f. wherein one of the first and second vessel portions is an interior portion of the vessel and the other of the first and second vessel portions is an exterior portion of the article.