- For 25 mL porcelain Gooch crucibles
- A combination rubber stopper and crucible holder with glass funnel insert
- Dimensions 57 mm length, tapered from 38 mm diameter at top to 22 mm diameter at bottom; length of tapered portion 35 mm
Fits 4948F21 and 4948H23 series Filter Flasks, 125 to 1,000 mL capacity, inclusive.