Method for cleaning hollow articles with plasma

Cleaning and liquid contact with solids – Processes – Including application of electrical radiant or wave energy...

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Details

21912136, 21912141, B08B 700

Patent

active

057003270

ABSTRACT:
A method of cleaning a hollow article comprises a step of introducing an oxidizing working gas into at least an interior portion of the hollow article, while a sub-atmospheric pressure is being maintained therein. Then, an electric field is applied, so as to convert the oxidizing working gas within at least the interior portion of the article into a low temperature plasma. This leads to oxidizing substances situated at least within the interior portion of the hollow article.

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"Specifications and Guidance for Contaminant-Free Sample Containers," OSWER Directive #9240.0-05A, Dec. 1992, pp. 1-26, Office of Emergency and Remedial Response, Office of Solid Waste and Emergency Response, U.S. Environment Protection Agency, Washington, D.C.

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