公开(公告)号：US3826621A

公开(公告)日：1974-07-30

申请号：US24891972

申请日：1972-05-01

Applicant: MICROMEDIC SYSTEMS INC

Inventor： JOHNSON E ,  CORNELISON J

IPC: G01N35/10 ,  G01N1/00 ,  G01N1/14

CPC classification number: G01N35/1095 ,  Y10T436/119163 ,  Y10T436/2575

Abstract: LIQUID IN SELECTED QUANTITIES IS TRANSFERRED THROUGH A CONDUIT FROM A CONTAINER TO THE OPERATIVE SECTION OF AN ANALYTICAL INSTRUMENT BY APPLYING GAS PRESSURE TO THE SURFACE OF THE LIQUID FOR A PREDETERMINED AMOUNT OF TIME. THE CHAMBER FOR COUPLING THE GAS PRESSURE TO THE SURFACE OF A LIQUID IS PROVIDED WITH A GAS BYPASS TO PREVENT SPRAYING OF THE LIQUID. THE GAS PRESSURE IS DIRECTED ONTO THE SURFACE OF THE CONDUIT TO REMOVE ANY LIQUID THAT REMAINS ON THE CONDUIT AFTER A SELECTED QUANTITY HAS BEEN TRANSFERRED TO THE OPERATIVE PART OF THE ANALYTICAL INSTRUMENT.