Patent ID: 7442340
Filing Date: 2008-10-28
Classification: G01N,Y10T

Abstract:
1. A chemical agent conversion tube assembly for use in a process for detecting an airborne chemical warfare agent comprising VX gas by drawing air to be analyzed for said agent through said assembly, comprising: a glass or polymer tube having an inlet and an outlet and defining a conversion passage therethrough, a chemical warfare agent conversion filter located within said conversion passage of said glass or polymer tube between said inlet and outlet, said chemical warfare agent conversion filter being sufficiently secured so as to prevent said chemical warfare agent conversion filter from being swept out of said glass or polymer tube due to said air flow through said glass or polymer tube, said chemical warfare agent conversion filter comprised of a plurality of adjacent filter elements defining a filter stack, and a conversion reagent disposed on at least some of said filter elements for converting said VX gas to a more volatile analog of said VX gas, said reagent producing said analog to be airborne whereby said plurality of filter elements within said conversion passage are sufficiently unrestricted to permit said analog to be carried by said air flow and to pass through said glass or polymer tube and through said outlet to a detection device located downstream of said chemical conversion tube for analysis of said analog from which the presence and concentration of VX gas in said air can be determined.