Made of PP / PS. CN membrane. Ideal for use with filtering flasks or manifolds. Upper chambers are graduated at 150 ml. Particularly useful for large volume analytical applications. Convenient snap-away design with removable membrane. Each package contains a vacuum gasket to replace stopper or adapter with 14.3 mm opening or larger opening. - Acc. to ISO 7704. - Sterile. - With graduation. Made of PP / PS. CN membrane. Ideal for use with filtering flasks or manifolds. Upper chambers are graduated at 150 ml. Particularly useful for large volume analytical applications. Convenient snap-away design with removable membrane. Each package contains a vacuum gasket to replace stopper or adapter with 14.3 mm opening or larger opening. - Acc. to ISO 7704. - Sterile. - With graduation.