Mouth filter for use with pipettes

Details Mouth filter for use with pipettes Mouth filter for use with pipettes

1977-10-11

1978-09-05

Sever, Frank

Liquid purification or separation

Structural installation

Flume stream type

734254P, 210251, 210416M, 210446, 210450, 210451, 210453, 210462, 210500M, 422100, 422101, B01D 2516, B01D 2904, B01D 3100

Patent

active

041118073

ABSTRACT:
In accordance with the invention there is provided a mouth filter for use with pipettes to insure that none of the liquid or any of the bacteria in the liquid being drawn into the pipette reach the mouth of the technician applying the suction. The filter comprises an organic resin housing having a filter membrane therein which divides the housing into an inlet chamber and an exit chamber, the filter membrane being hydrophobic and constituting a bacteria barrier. The housing has tubular extensions extending from the oppositely disposed axial end walls thereof. A tube is secured to one extension of the housing and is adapted to be secured in communicating relationship with a pipette into which the liquid is to be drawn. Connected to the other housing extension is a mouthpiece for mouth-applied suction by the technician, which suction is communicated through the filter membrane and tube to the pipette.

REFERENCES:
patent: 2376231 (1945-05-01), Cohn
patent: 2692503 (1954-10-01), Crecelius
patent: 2879207 (1959-03-01), Poitras

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