Filter Unit Nalgene™ Rapid-Flow™ Bottle Top Polystyrene / PES Membrane 500 mL (16 oz.)

Marked with catalog number, membrane type, pore size, lot number and expiration date for easy traceability

.45 µm pore size

Fits 45 mm bottle neck size

Gamma radiation sterilized and individually bagged for 5-year sterile shelf life

Includes: polystyrene graduated chamber; Blue color-coded collar with cellulosic vent plug side arm and quick-disconnect tubing adapter; 50, 75, or 90 mm diameter membranes; bottom screw threads for attachment to bottles with 33 or 45 mm neck sizes