The Pyrex® Hirsch Funnel with Fritted Disc from Corning is very suitable for preparation work, or making separations where it is necessary to wash the precipitate and redissolve with chemicals which would attack filter paper.
Specification
Disc diam.: 20 mm Stem O.D. × L: 8 mm × 75 mm Top I.D.: 50 mm Pore size: 10-15 μm porosity