Device for the separation of the lighter fraction from the heavier fraction of a liquid sample
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United States of America Patent
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-
Nov 7, 1989
Grant Date -
N/A
app pub date -
Jan 25, 1985
filing date -
Jan 25, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A device for the separation of the lighter fraction from the heavier fraction of a liquid sample for use with two evacuated receptacles includes a housing having an interior cavity and a membrane separator dividing this cavity into a first portion and a second portion. The membrane separator has a porosity selected for the desired separation thereacross. An inlet structure is provided for fluid communication between the first portion of the interior cavity and the source of the liquid sample. First structure is provided to allow fluid communication between the first portion of the interior cavity and the first evacuated receptacle. This first structure is opposed from the inlet structure so that liquid passing from the inlet to the first structure travels in a direction along the surface of the membrane. Further structure is provided to allow fluid communication between the second portion of the interior cavity and the second evacuated receptacle.
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