Asahi AM-R Series Hollow Fiber Dialyzers; a dry model single or multiple use dialyzer consisting of hollow fiber membranes of cuprammonium rayon housed within a plastic casing of styrene butadiene block polymer, 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 AM-NR-65U - 1.3 m2 surface area, Model AM-NR-75U - 1.5 m2 surface area and Model AM-NR-100U - 2.0 m2 surface area