VERFAHREN UND APPARAT ZUM WEGNEHMEN VON LUFTSCHLEUSEN IN HANDBETÄTIGTEN MIKROFILTRATIONSVORRICHTUNGEN

摘要

PCT No. PCT/CA94/00599 Sec. 371 Date Jul. 26, 1996 Sec. 102(e) Date Jul. 26, 1996 PCT Filed Nov. 7, 1994 PCT Pub. No. WO95/12449 PCT Pub. Date May 11, 1995A method and apparatus for removing an air lock from the upstream side of a microfilter in a device for dispensing a sterile liquid from a storage container by forcing the liquid through a microfilter. The device include a first inlet passageway communicating between the storage container and a chamber on the upstream side of the filter closable by a valve, and a second passageway communicating between the storage container and the upstream side of the filter closable by a second valve, and the method includes the steps of a) creating partial vacuum in the chamber on the upstream side of the microfilter to thereby open the first valve and draw the liquid from the storage container through the first passageway into the chamber, and into the contact with the upstream side of the filter, b) closing the first and second valves and increasing the air pressure in the chamber, and c) opening the second valve thereby releasing air under pressure from the chamber through the second passageway.