Asahi Rexeed Series Multiple-Use Hollow Fiber Dialyzers; a wet model multiple use dialyzer consisting of hollow fiber membranes of polysulfone/PVP housed within a plastic casing of styrene copolymer, filled at the factory with fluid to facilitate priming by the user, and sterilized by gamma radiation before shipment; Asahi Medical Co., Ltd., 9-1, Kanda Mitoshirocho, Chiyoda-ku, Tokyo 101-8482, Japan; Made in Japan; 12 units per case; Model Rexeed-15R - 1.5 m2 surface area, Model Rexeed-18R - 1.8 m2 surface area, Model Rexeed-21R - 2.1 m2 surface area, Model Rexeed-25R - 2.5 m2 surface area