NALGENE® 130 Analytical Filter Units, polypropylene upper, polystyrene lower, Cellulose Nitrate membrane

Disposable, pre-assembled. Designed for ease of use and better performance. Upper twists off easily for improved retrieval of the 47mm membrane. Wider base is stable on the bench. Non-silicone gasket minimizes risk of contamination. Excellent for microbial analysis, sterility testing, water quality or environmental testing. Easy-opening bag. Sterile/Graduated.