GC044 Septa

The self-sealing septum provides a way to seal the injector and at the same time, allow the users to inject the samples into the GC. They are usually made of polymeric silicone. To select the correct septum, several properties should be considered: high-temperature stability, decomposition (also called “bleeding”), size, lifetime and cost. The self-seal is conserved during 50 injections or more for most septa. It should be replaced on a regular basis.

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