FILTRATION DEVICE

摘要

The present invention relates to a filtration device containing multiple areas or layers of filtration material, each of which is capable of being integrity tested individually within an assembled device. The filtration device comprises an inlet (6) and an outlet (8), wherein the two or more areas of filtration material are arranged in the device such that a fluid to be filtered can serially flow from said inlet through said areas of filtration material and out of said outlet. A space (30) is provided between adjacent areas of filtration material, and a port (10) is provided in fluid communication with each said space and so as to be accessible to the outside of the device.