20mm PTFE Septa suit for Headspace Vial
https://www.hplcvials.com/products/6-20ml-gc-headspace/20mm.html

20mm PTFE Septa suit for Headspace Vial

PTFE-fused septa are suitable to overcome the degradation, which happens due to prolonged high temperatures, commonly observed in silicone rubber septa. The degradation results in baseline drift and additional peaks. It is generally fixed with the PTFE face towards the column packing.

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