A U.S. Patent for a “Plunger Pumping Arrangement for a Hollow Fiber Filter” was awarded to Repligen on October 13th, 2020. The present invention is a fluid filtration assembly that includes a filter housing having a first end for fluid connection with a fluid storage vessel. A filter cartridge is disposable within the filter housing, and a plunger pump is coupled at a second end of the filter housing. The plunger pump includes a housing having a rigid portion and a flexible portion. The flexible portion has a plunger-engaging portion for coupling to the plunger of an actuator. The flexible portion selectively movable with respect to the rigid portion via the actuator. Learn More