material
off-white silicone body (123 mil thick), yellow PTFE face (2 mil thick)
packaging
pkg of 100 ea
diam.
9.5 mm ( 3/8 in.)
General description
PTFE-faced septa are suitable to overcome the degradation due to prolonged high temperatures which occurs in silicone rubber septa. The degradation results in baseline drift and additional peaks. It is generally fixed with the PTFE faced towards the column packing.
PTFE面隔垫专门用于需要更大惰性的应用。类白色硅胶体（123 mil厚）为黄色PTFE面（2 mil厚）提供了大量支撑。注射时PTFE破裂后，可能会发生一些流血。由于这种出血随着橡胶暴露而增加，因此我们建议使用针头引导来减小穿刺区域的大小。在200℃至300℃的入口温度下使用。
Application
Glass vials equipped with stir bars may be sealed with PTFE faced silicone septa for solvent drop microextraction analysis of water samples. This may be used in sealing the vials used for headspace solid-phase microextraction (HS-SPME) procedure during determination of aldehydes in drinking water.
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