Method for making a vaccum filter device

Details Method for making a vaccum filter device Method for making a vaccum filter device

1997-03-24

1999-02-23

Lorin, Francis J.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156157, B29C 6500

Patent

active

058739670

ABSTRACT:
A vacuum filter device is disclosed which includes a filter body which is adapted to receive in fluid-tight, sealed relationship a pair of closed containers for solutions to be filtered by a membrane filter positioned within the filter body. A vacuum port in the filter body communicates with the downstream side of the membrane and a venting passageway also located in the filter body communicates with the closed sample container to serve as a vent to atmospheric pressure. The venting passageway is made of an air permeable hydrophobic filter or preferably a small enough opening to prevent the sample solutions from leaking out of the device during normal use.

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