Bel-Art Products H14603-0000 Scienceware Buchner Funnel, Polypropylene, 315 mL Capacity Economical, lightweight and durable Polypropylene buchner funnel body with high density polyethylene pierced plate to support filter paper 47mm Rim to plate Use with vac-ring filter seal for quick filter setup Steam autoclaved at 121 degree C (250 degree F)