Septa for GC
Features

	Septum grade	Material	Thickness	Hardness	max. Temp.
	Standard septa (ST)	beige silicone rubber	4 mm	60 shore
	High temperature septa (HT)	red, specially pretreated, non-bleeding silicone rubber	3 mm	60 shore	320 °C *
	Silicone septa soft	transparent silicone septa	3 mm	45 shore	250 °C
	Silicone septa PTFE	white silicone rubber, one side coated with grey PTFE	3 mm		200 °C
*	When used at considerably higher temperatures – and working without septum purge – interfering peaks can occur due to thermal decomposition of the material.

Ordering information

Septum grade	Outer diameter
(packs of 50 septa)	9 mm N 9	10 mm N 10	11 mm N 11	12 mm N 12	13 mm N 13	17 mm N 17
Standard septa (ST)	702609	702610	702611	702612	702613
High temperature septa (HT)	702619	702620	702621	702622	702623	702632
Silicone septa soft	702602		702604	702605	702606
Silicone septa PTFE		702625	702626	702627	702628
Septum remover (tool for removing septa which have become baked into the injection port of the gas chromatograph)						706141