Clear heavy molded funnels with raised ribs on the inner surface to increase flow rate.

These polypropylene 2-piece funnels are light-weight, easy to clean, and autoclavable. The top portion snaps into the lower one, forming a vacuum seal that does not require greasing. The vase of the top portion has a perforated filter plate.

Buchner funnel with fixed perforated plate and glazed inside and out except for rim.