EPDM (Ethylene Propylene Diene Monomer) septum is a type of synthetic rubber commonly used in laboratory and industrial settings. It is primarily used as a sealing material in various applications, including as a septum for sealing sample vials or containers.
EPDM septa are often used in chromatography and analytical chemistry techniques, such as gas chromatography (GC) and high-performance liquid chromatography (HPLC). They are placed on the top of the vial or container, providing a reliable and airtight seal.
The septum allows for the injection of a needle or syringe to introduce or withdraw samples or reagents without compromising the integrity of the contents.
EPDM is favored for septa due to its excellent chemical resistance, low extractability, and ability to maintain a secure seal even under varying temperature conditions.
