- Nalgene 147
- Membrane meets EPA requirements for water quality work
Cellulose nitrate black membrane filter is perfect for detecting micro-organisms difficult to see on white membranes. Graduated, 100 mL upper chamber provides sample accuracy and convenience. “Peel away” upper readily separates from collar, permitting easy retrieval of membrane for microbiological analysis. Membrane diameter is 47 mm and the pore size is 0.45 µm. Polypropylene housing with polystyrene collar. Supplied with six sterile funnel adapters, designed to fit a No. 8 rubber stopper. Each funnel is packaged in an easy-open bag for convenience.