Polysulfone
- Durable and non-toxic
- Screw-type closure holds membrane in place
- Autoclavable
Can be used with any filtering flask or manifold that accepts a suitable rubber stopper with hole. Includes one easy-to-use, no-twist Nalgene® vacuum gasket, which can replace a No. 7 or 8 rubber stopper with a 9/16” (15 mm) hole.