Funnels, general purpose, conical.
Choice of Filter Paper
The following is an approximate guide to the filter paper diameter required for some of the common sizes of conical filter funnel.
| Funnel, mm | Filter paper, cm | Funnel, mm | Filter paper, cm | |
| 35 | 5.5 | 100 | 18.5 | |
| 45 | 7.0 | 150 | 24.0 | |
| 55 | 9.0 | 180 | 32.0 | |
| 65 | 11.0 | 200 | 40.0 | |
| 75 | 12.5 | – | – |