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This 100mL low-cost disposable sterile filter funnel can be used for microbiological analysis testing food/beverages raw material sterility testing and finished product quality. Funnel is fitted with a white gray-gridded 47mm/0.45µm cellulose nitrate (CN) membrane. Membrane meets U.S. EPA requirements for water quality work. Upper separates easily from lower for easy access to the membrane. Funnel adapter allows use with No. 8 stoppers (Cat. No. NAL-DS0396-0080). Six funnel adapters included with each case. Polypropylene upper with high-impact polystyrene collar. Cellulose Nitrate (CN) membrane diameter: 47mm. Pore size: 0.45µm. Filter color: white gray-gridded. Capacity: 100mL. 50/Case. Nalgene #: 145-0045.