use Natural Ptfe GC septa
2022-12-13
Septa 16 mm | Sigma-Aldrich
Product No. Description. Pricing. 27166. white tan PTFE/silicone, diam. × thickness 16 mm × 0.090 in., for use with 15 mL vial, pkg of 100 ea. Expand. Hide. 27380-U. tan PTFE/silicone,
Evaluation of Septa Quality for Automatic SPME–GC–MS
Kolb et al. showed that in using silicone–PTFE rubber septa, 69% of acetone and 89% of dichloromethane were lost, while in butyl–PTFE rubber septa, the losses were less than 3%. This outcome indicated that butyl rubber is denser ...