Device for the separation of the lighter fraction from the heavi

Details Device for the separation of the lighter fraction from the heavi Device for the separation of the lighter fraction from the heavi

1987-10-27

1989-06-27

Richman, Barry S.

Chemistry: analytical and immunological testing

Including sample preparation

Liberation or purification of sample or separation of...

436178, 422101, 422104, 2103216, 21032184, 2104331, 210649, 128762, 128763, 128764, 604414, G01N 118

Patent

active

048430170

ABSTRACT:
A device for the separation of a 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.

REFERENCES:
patent: 4639316 (1987-01-01), Eldegheidy

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