This polysulfone (PSF) filter holder comes with a 250mL filter funnel and can be used with any filtering flask or manifold that accepts a suitable rubber stopper with hole. It accepts 47mm membrane filters and comes with one easy-to-use no twist Nalgene® vacuum gasket which can replace a number 7 or 8 rubber stopper with 9/16 inch (15mm) hole. Material: polysulfone (PSF). Upper chamber capacity: 250mL. Diameter: 94mm. Height including cover ports: 190mm. Nominal filter area with analytical support plate: 11.25sq cm. Nominal filter area with sterilization support plate: 13.3sq cm. Sold individually. Nalgene® #: DS0310-4000.