
The Filter Adapter Set Of 7, Synthetic Rubber by United Scientific is a nested set of seven synthetic rubber cones that seat Buchner funnels, fritted glass funnels, porcelain filters and Gooch crucibles on filter flasks. Top outside diameters run from 21 mm to 90 mm, and adjacent sizes can be nested for an in-between fit. The adapters are autoclavable and serve chemistry and teaching labs that filter with mixed funnel sizes.