Convenient alternative to dialysis, lyophilization, or precipitation. For concentration and purification of 15 to 70 mL. NMWL, kDa: 10. Hold-up Volume,?L: 75. Diameter,mm: 60. Volume, mL: 15 to 70. Filtration Area, cm squared: 19. Device Material: Filtrate collection cup, sample filter cup, concentrate/retentate cup and cap: Polypropylene. Processing Volume, mL: 70. Final Concentration Volume,?L: 350. Hold-up Volume,?L: 75. Centrifugal Force: Swinging-bucket rotor (250 mL) w/maximum 3,500 x g. Materials. Membrane: See ordering information. Device: Polypropylene. Dimensions. Active Membrane Area, cm squared: 19. Diameter,mm: 60. Length,mm: 121. Recovery: Typically >90%. Sanitization: Rinse with 70% ethanol solution. Chemical Compatibility: Use with biological fluids only.