Ferrules are suitable for the attachment of the column and other glass components to the system. Flexible graphite ferrules withstand high temperatures and are capable of compression.
Application: Supeltex® M-2A vespel-ferrules were suitable for closing the opening of sorption tubes to prevent the layers from mixing during determination of concentrations of volatile hydrocarbons in air samples.
Legal Information: Supeltex is a registered trademark of Sigma-Aldrich Co. LLC