EP 1971846 A1 20080924 - METHOD AND DEVICE FOR TESTING THE INTEGRITY OF FILTRATION MEMBRANES
Title (en)
METHOD AND DEVICE FOR TESTING THE INTEGRITY OF FILTRATION MEMBRANES
Title (de)
VERFAHREN UND VORRICHTUNG ZUM TESTEN DER INTEGRITÄT VON FILTRATIONSMEMBRANEN
Title (fr)
PROCEDE ET DISPOSITIF DE TEST D'INTEGRITE DE MEMBRANES DE FILTRATION.
Publication
Application
Priority
- FR 2006002720 W 20061213
- FR 0512954 A 20051220
Abstract (en)
[origin: FR2894843A1] The process, including a stage in which the insides of the membrane's hollow fibers are pressurized by a gas such as air, is used to test membranes of inner skin type, with a concentrate compartment (J) formed by the insides of the hollow fibers, and the permeate compartment (K) is formed by their outer surfaces. The pressurized gas is circulated in the concentrate compartment to empty the hollow fibers, which are open at their ends, and the permeate compartment is left at atmospheric pressure so that the membrane surface liquid can migrate through the membrane. The permeate compartment is then isolated, and the pressure inside it is measured and compared after a set time with the pressure to be found in an integral membrane.
IPC 8 full level
G01N 15/08 (2006.01); B01D 65/10 (2006.01)
CPC (source: EP US)
B01D 63/02 (2013.01 - EP US); B01D 65/102 (2013.01 - EP); B01D 2311/06 (2013.01 - EP); B01D 2313/903 (2022.08 - EP US); C02F 1/444 (2013.01 - EP); G01N 15/0826 (2013.01 - EP)
C-Set (source: EP)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
FR 2894843 A1 20070622; FR 2894843 B1 20080222; CN 101341389 A 20090107; EP 1971846 A1 20080924; WO 2007080260 A1 20070719
DOCDB simple family (application)
FR 0512954 A 20051220; CN 200680047966 A 20061213; EP 06841924 A 20061213; FR 2006002720 W 20061213