Liquid transfer device

A liquid transfer device including a holder for a pipette array. A flexible preformed membrane having cups is over the proximal openings of the pipettes and sandwiched therebetween with a housing with the cups extending into the proximal openings of the pipettes. A vacuum drawn in the housing everts...

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Bibliographic Details
Main Author GOODMAN; JACK
Format Patent
LanguageEnglish
Published 06.09.1994
Edition5
Subjects
CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
CONVEYING
HANDLING THIN OR FILAMENTARY MATERIAL
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGINGARTICLES OR MATERIALS
MEASURING
PACKING
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
PHYSICS
STORING
TESTING
TRANSPORTING
UNPACKING
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Summary:A liquid transfer device including a holder for a pipette array. A flexible preformed membrane having cups is over the proximal openings of the pipettes and sandwiched therebetween with a housing with the cups extending into the proximal openings of the pipettes. A vacuum drawn in the housing everts the membrane from the proximal openings thereby creating reduced pressure in the pipettes which when their distal ends are immersed in a liquid will draw up some of the liquid into the pipettes in substantially equal amounts. In one embodiment a movable abutment is provided to control the upward travel of the everting membrane and thereby the amount of liquid drawn into the pipettes. A method for fabricating the preformed membrane is also shown.
Bibliography:Application Number: US19930081051