DURAN® bromobutyl rubber closures provide a gas tight seal for GL 25 or GL 45 glass laboratory bottles. Bromobutyl rubber is essentially impermeable to most gases, and provides a controlled environment inside the glass bottle for oxygen sensitive materials. Useful for maintaining anaerobic culture conditions. Bromobutyl rubber allows for multiple punctures providing easy access to the contents with a syringe. A Type III Packaging Material DMF (35811) for these products has been filed with the FDA.
- Straight plug
- Natural rubber
- Grey
- Bromobutyl rubber elastomer coforms with EP 3.2.9 Type I closure for chemical and penetration tests
- Gas tight seal provides controlled environment in the bottle
- Lot specific Certificate of Conformance (CoC)
- A Type III Packaging Material DMF (35811) for these products has been filed with the FDA
- Elastic material for effective sealing and reliable self-sealing after needle piercing (21-gauge “21G” or smaller)
- Multiple punctures providing easy access to the contents with a syringe
- Stopper shapes and material properties optimised to fit DURAN® GL 25 or GL 45 bottles
- Suitable for autoclaving / steam sterilising at 121°C for 20 minutes
- Wide usable temperature range: –50 to 121°C
This product has met the following criteria: