Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Jürgen Landgraf0
Date of Patent
February 8, 2011
0Patent Application Number
122664020
Date Filed
November 6, 2008
0Patent Primary Examiner
Patent abstract
A method for operating an ion mobility spectrometer that comprises a measuring tube, a substance collector and a membrane inlet, the measuring tube, the substance collector and the membrane inlet defining a closed internal gas circuit, comprising separating the closed internal gas circuit from an external sample gas flow through the membrane inlet, transferring circulating gas containing an analyte substance from the membrane inlet to the substance collector, the analyte substance accumulated in the substance collector, releasing the accumulated analyte substances, and transferring the released analyte substances to the measuring tube.
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