Composite membrane and support assembly
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United States of America Patent
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Dec 30, 1997
Grant Date -
N/A
app pub date -
Jul 29, 1996
filing date -
Jul 29, 1996
priority date (Note) -
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Abstract
For treating a fluid sample for introduction to a mass spectrometer or other appropriate use, a composite membrane and support assembly allows analytes from a sample flow to permeate through a membrane free from the undesired background matrix. The composite membrane and support assembly comprises a semipermeable membrane, a fiber member for supporting the membrane, and a rigid perforated member for supporting the membrane and the fiber support.
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