A biological fluid filter is disclosed for use in a biological fluid processing system. The biological fluid filter comprises an inlet section, with said inlet section comprising a top wall and a downstanding peripheral side wall, an outlet section complimentary in shape and bonded to said inlet section to form a chamber, said outlet section comprising a bottom wall and an upstanding wall and a filter element mechanically held in place between said inlets section and said outlet section to divide said chamber into at least an inlet chamber and an outlet chamber, said inlet chamber and said outlet chamber also in communication with a vent embedded in said filter element.
