DURAN^® bromobutyl rubber closure provides a gas tight seal for GL 25 and GL 45 laboratory bottles. Bromobutyl rubber is essentially impermeable to most gasses and provides a controlled environment inside the glass bottle for oxygen sensitive materials. Useful for maintaining anaerobic culture conditions. Butyl rubber allows for multiple punctures providing easy access to the contents with a syringe.

Applications:

• Storage of anaerobic culture media (amber glass bottles recommended).
• Aerobic methane oxidation (MOx) research.
• Storage of oxygen sensitive materials.

Features:

• Stopper shape, and material properties optimised to fit DURAN^® bottles with sizes from 10 ml to 20 l.
• Low permeability to air, gases and moisture.
• Material is virtually free of organics that might leach into the incubation medium.
• Elastic material for effective sealing and reliable self-sealing after needle piercing.
• Upper surface features 7 numbered hemispherical impressions for needle-piercing.
• Wide usable temperature range: - 50 to + 121 °C.
• Suitable for autoclaving / steam sterilising at 121 °C for 20 min.