1/4" OD PTFE (Polytetrafluoroethylene) Ferrules. Heavy Duty ferrule is larger and thicker and typically used with Compression Caps whereas the Standard ferrules is typically used with Analytical Caps.
Amberlite and XAD are registered trademarks of The Dow Chemical Company or an affiliated company of Dow. Supelpak, Carbosieve, Carboxen and Carbopack are trademarks of Sigma-Aldrich Co. LLC. Anasorb is a registered trademark of SKC, Inc. Chromosorb is a registered trademark of Imerys Minerals California, Inc. HayeSep is a registered trademark of Hayes Separation Inc. Tenax is a registered trademark of Buchem B.V.. Carbograph is a trademark of LARA S.r.l.