Nalgene® Rapid-Flow™ Filter Units with Cellulose Nitrate Membrane, Sterile

Nalgene® Rapid-Flow™ filter units are furnished complete with an upper funnel, lower filter unit receiver and an integral cellulose nitrate membrane filter. These filter units are leakproof and feature a 1-1/2 turn threaded screw closure with a green collar. Each case of filter units also includes an adequate portion of glass microfiber pre-filters for added filtration if needed. Separate transparent sterile filter unit receivers are also available (See Nalgene 455 Series). Polystyrene construction of both funnel and lower receiver bottle.