Patent ID: 7727300

Claim:
A separation device including a fluid contacting surface, the separation device comprising at least a portion of a multi-layer composite structure, the multilayer composite structure including a first polymeric film defining a first edge surface that extends from a facing surface of the first polymeric film to a backing surface of the first polymeric film, the facing surface and the backing surface opposing one another, the first polymeric film comprising a first functional chemistry for directly or indirectly binding a compound, the multilayer composite structure also including a second polymeric film defining a second edge surface that extends from a facing surface of the second polymeric film to a backing surface of the second polymeric film, the facing surface and the backing surface opposing one another, wherein the fluid contacting surface includes the first edge surface and the second edge surface, the first edge surface forming a first discrete area of the fluid contacting surface, and the second edge surface forming a second discrete area of the fluid contacting surface.