Nalgene MF75 Rapid-Flow Sterile Disposable Filter Units. Polystyrene housing. Graduations on both uppers and receivers. Leakproof 1-1/2 turn threaded screw closure provided for receiver. Units are sterile. Color coded collars by membrane type: GREEN = Cellulose Nitrate, RED = Nylon, YELLOW = SFCA. Units with receiver capacity of 500mL or larger include 12 glass-fiber prefilters.
(Sample Photo Displayed. Individual items may differ from the image shown.)