DURAN® GL 45 Aluminium Screw Closure, open topped, with 34 mm central aperture

DURAN® GL 45 Aluminium Screw Closure, silver, open topped, with 34 mm central apertureAluminium is an alternative material to the plastic used in most screw closures for laboratory bottles. The caps are available as a closed-top cap with a high temperature PTFE coated cap liner, or as an open-top cap for use with septum or stopper. Metal closures offer a wide range of temperature tolerances and have a high mechanical strength. Aluminium offers superior barrier qualities that protect against light, moisture, oxygen, and other gases.Features and Benefits:Free of “hydrocarbon-based plastics”, plasticizers, phthalates, etc.High temperature usage up to +260 °C for depyrogensation or hot air sterilization*Convenient: Thread fits all DURAN® GL 45 glass bottles from 100 mL to 20 LitresSecure sealing with USP <88> Class VI PTFE coated silicone cap linerCap liner is supplied unmounted for easy processing and is replaceableConvenient opening and re-closing as the knurling provides extra grip for wet or gloved handsProtection: Electrically conductive material – ESD dissipationVersatile: Open topped (aperture) closure can be used with DURAN® GL 45 Bromobutyl Rubber Stopper or Silicone SeptaExtra protection – Optional plastic 45 mm Over-cap seals the open topped (aperture) capApplication: As alternative to plastic screw caps for laboratory bottles, High-temperature processing and applications, Low-temperature / cryogenic sample storage, Pharma API and sensitive material storage, The open topped Aluminium cap is a “non-plastic” alternative to the PBT plastic aperture cap more