| Model | VF 20 | VF 21 |
| Material | ||
| Funnel | Borosilicate glass | Borosilicate glass |
| Support base | Borosilicate glass | Borosilicate glass |
| Membrane support | Sintered glass | SS screen with PTFE gasket |
| Clamp | Aluminum | Aluminum |
| Evaporating flask | Borosilicate glass | Borosilicate glass |
| Specification | ||
| Funnel capacity | 300 mL | 300 mL |
| Flask capacity | 1000 mL | 1000 mL |
| Filter diameter | 47 mm / 50 mm | 47 mm / 50 mm |
| Effective filtration area | 12.6 cm2 | 9.6 cm2 |
| Hose barb | ID8 | ID8 |
| Joint size | TS 24/40 | TS 24/40 |
*The flask withstands nearly full vacuum for use in vacuum filtration.
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