Tight & solid Buchner flask adaptor
Take your vacuum filtrations to the next scale with ChemBria’s Buchner 68 mm flask adaptor!
Designed for performance and reliability, it ensures a perfect vacuum-tight seal and rock-solid stability – outperforming traditional conus fittings. ChemBria Buchner flask adaptors are available in two premium materials: durable natural rubber or high-grade silicone rubber. With no added colorants, the adaptor is clean, easy to handle, and built to last – in your lab!
Filter adaptor collar seal for vacuum filtration
ChemBria developed an adaptor for vacuum filtration straight into a round‑bottom flask – that saves time, glassware, and minimizes the risk of spills.
The secret? A reliable seal between funnel and a 29 NS joint or a vacuum filtration adapter.
Perfect fit: a perfectly fitted seal made from colorant‑free silicone or rubber
Versatile: suitable for use with adaptors or directly on a 29/32 NS glass joint
Stable: it stays firmly in place, ensuring full control and no sudden movements when releasing the vacuum.
Something you will need… In your lab!
Cone set filter adaptors
Best quality at better price
Sets of filter adapters made of durable silicone in various sizes. It can be used as round bottom flask holder as well.
Price list
| Item no. | Item no. (old) | Rubberware | Price per pcs. | 10 Pcs. order Price per pcs. |
| CB104RS68 | 100701 | Buchner 68 mm flask adaptor – silicone | € 40 | |
| CB104RN68 | 100702 | Buchner 68 mm flask adaptor – rubber | € 40 | |
| CB105RS29 | 100703 | Filter adapter with collar – silicone | € 20 | |
| CB105RN29 | 100704 | Filter adapter with collar – rubber | € 20 | |
| CB103RS7 | 100501 | Cone set with 8 filter adaptors – silicone | € 30 |







ChemBria ApS
ChemBria ApS