Valve and membrane device

Details Valve and membrane device Valve and membrane device

H - Electricity

01

J

358/9

H01J 49/04 (2006.01) G01N 1/00 (2006.01) H01J 37/20 (2006.01)

Patent

CA 2032946

ABSTRACT A combination of a membrane, such as a silicone rubber membrane, and a valve having a chamber within it, such as a solenoid valve. The present invention is suitable, for example, for use with a mass spectrometer. The membrane partitions the chamber into a first chamber portion and a second chamber portion. The valve has at least three pas- sageways into it. The first two passageways lead to the first chamber portion. The third passageway leads to the second chamber portion. A solenoid plunger located within the chamber is used to close off the third passageway when desired. When used with a mass spectrometer, the third passageway is connected to the vacuum inlet of the mass spectrometer and a sample is flowed into and out of the first chamber portion via the first two passageways. A component of interest in the sample can permeate across the membrane into the second chamber portion and can flow via the third passageway to the mass spectrometer.

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