Thermo Fisher Scientific Nalgene Rapid-Flow Sterile Disposable Bottle Top Filters. Nalgene Rapid-Flow Sterile Disposable Bottle-Top Filters fit Nalgene filter receiver bottles (455-series) or standard glass media bottles. Surfactant-Free Cellulose Acetate (SFCA) membranes have lower extractables than standard cellulose acetate (CN) membranes. Filters marked with catalogue number, membrane type and pore size, lot number and expiration date for easy traceability. Side-arm with quick-disconnect tubing adapter for easy bottle top changes. Non-cytotoxic and non-pyrogenic. Material PS. Volume 500ml. Diameter 75mm. Type Bottle Top. Graduated Yes. Colour Yellow. Membrane SFCA. Pore Size 0.45µl. Fits Neck 45mm. Sterile Yes. Autoclavable No. Pack Qty 12.