Laminated filters

Details Laminated filters Laminated filters

B - Operations, Transporting

01

D

183/107

B01D 39/16 (2006.01) B01D 46/10 (2006.01) G01T 7/04 (2006.01)

Patent

CA 1158992

Abstract Disclosed are filters which are particularly useful in sampling devices for detecing radioactive particulate contaminants in a gaseous medium, such as air. The filters comprise a filter membrane sandwiched between two pieces of plastic material having holes exposing the filter membrane to the gaseous medium. The filters can readily be handled by grasping them by their plastic portions and there is little risk of the filter medium being damaged. An air tight seal may easily be made with the plastic surrounding the filter medium. The filter is easily constructed by placing a piece of filter material to cover a hole in a plastic base layer and then covering them both with a plastic cover layer having a hole to match the hole in the base layer. The cover layer is preferably formed of self-adhesive vinyl.

373979

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