A Proper Stopper for DURAN® GL 45 bottles from DWK Life Science
DWK Life Sciences has launched a new DURAN® branded GL 45 synthetic rubber stopper specifically shaped for the reliable sealing of all laboratory bottles with a GL 45 neck finish.
Thanks to the virtual inertness of DURAN® borosilicate 3.3 glass, high value and sensitive materials are routinely stored in the DURAN® Original GL 45 laboratory bottles. However, most of the commercially available screw closures do not provide a seal that is reliability impermeable to gases and water vapour. Therefore we have developed the new DURAN® stoppers from a high-purity bromobutyl rubber elastomer. Bromobutyl rubber is a well-understood material that is essentially impermeable to most gases, including water vapour, and maintaining controlled conditions inside the glass bottle.
Alistair Rees, DURAN Product Manager at DWK Life Sciences commented: “The new GL 45 stoppers meet the critical requirements of many high demand applications such as in anaerobic microbiology, or for the