This 250mL polysulfone filter holder eliminates the need for a manifold and/or breakable glass vacuum flask. Receiver is graduated. Filter holder accepts 47mm membrane filters. Two side-arms allow connection to vacuum line; also accepts syringe filters. Tubing adapter can be stuffed with cotton for sterile venting during autoclaving; accepts 6 to 8mm (1/4 to 5/16 inch) inner diameter vacuum tubing. Cover allows convenient storage of sterile filtrate. Material: polysulfone. Capacity: 250mL. Overall width including side-arms: 110mm. Receiver diameter: 83mm. Height including cover ports: 180mm. Filter area with analytical support plate: 11.25mm. Filter area with sterilization support plate: 13.3mm. Nalgene #: 300-4000.