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物質
off-white silicone body (123 mil thick)
yellow PTFE face (2 mil thick)
包装
pkg of 100 ea
直径
9.5 mm ( 3/8 in.)
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詳細
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被膜付きセプタムは、より高度な不活性を必要とする用途向けに設計されています。オフホワイト色のシリコーンゴム本体(厚さ123 ミル)が、黄色のPTFE被膜(厚さ2ミル)を十分に支持しています。注入によってPTFEの表面が裂けると、いくらかのブリードが発生します。このブリードはゴムの露出部分が多いほど増えるため、ニードルガイドによって破裂部分の面積を減らすことをお勧めします。200°C～300°Cの入口温度で使用します。
アプリケーション
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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試験成績書（COA）
Lot/Batch Number
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Beatriz Cancho et al.
Journal of chromatography. A, 943(1), 1-13 (2002-02-01)
A headspace solid-phase microextraction (HS-SPME) procedure followed by gas chromatography and electron capture detection (GC-ECD) has been developed for the determination of aldehydes in drinking water samples at microg/l concentrations. A previous derivatization with o-(2,3,4,5,6-pentafluorobenzyl)hydroxylamine hydrochloride (PFBHA) was performed due
Carmen López-Blanco et al.
Analytical and bioanalytical chemistry, 383(4), 557-561 (2005-09-01)
Water contamination due to the wide variety of pesticides used in agriculture practices is a global environmental pollution problem. Analytical methods with low quantification limits are necessary. The application of a new extraction technique, solvent drop microextraction (SDME), followed by
Ian A. Fowlis
Gas Chromatography, 62-62 (2008)
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