Used as convenient alternative method for closing sterile media flasks and vials instead of cotton plugs.
Used for microbiology applications
During storage of media, it is preferable to cover the stoppers with aluminum foil to avoid dust contamination on removal
Shrinkage will occur after continued use following autoclaving, but this is dependent purely on application
To eliminate the possibility of obstructing the flow of air into the media container, care should be taken not to crease the stoppers on fitting