Patent ID: 6696024
Filing Date: 2004-02-24
Classification: B01L,G01N,Y10T

Abstract:
Device for the capillary transport of a liquid between two opposite, essentially planar layers, in which the two layers are arranged parallel to one another at such a distance that there is a capillary-active gap forming a capillary channel between the two layers, wherein at least one of the two layers contains at least two discrete adjacent cover layers each having an end and being positioned next to one another end to end and a flexible inert foil of less than 5 &mgr;m thick is attached to a side facing the channel capable of capillary liquid transport, which is composed of the at least two cover layers, and which extends over an entire length of one of the said cover layers, covers the capillary channel over its entire width and partially covers the adjacent cover layer on the side facing the channel capable of capillary liquid transport, wherein the flexible, inert foil is hydrophilized on a surface facing the capillary gap and a layer of oxidized aluminium is used for the hydrophilization.