The vials used for the preparation of breath samples for automated solid-phase microextraction–gas chromatography–mass spectrometry analysis are crimped 

These disturbances are often caused by septum bleed. Volatile materials from the septa can accumulate at the head of the column during the cool-down portion of 

US ePA Method 8270 Short Mix DB-5ms Ultra inert gC Analysis of 37 fAMe Mixture on CP-Select for fAMe Column. Column: ... Therefore, changing septa and.

Which septum to use is dependent on the injection port temperature dictated by the analytical method and the septum's thermal stability.

May 25, 2012 A comparison of septum degradation data obtained from a variety of standard GC septa, including the Thermogreen LB-2, AG3 (Green), ...

Mar 13, 2002 chromatographic analysis. A computer with a Thermo data system or a computing integrator can be used to process the data from the GC.

Interference is one of the most challenging problems found in analytical method validation. The criteria discussed here to prevent silicon septa interference 

Advanced Green inlet septa eliminate sticking and reduce coring. Bleed temperature optimized (BTO) inlet septa are preconditioned and ready to use with low- 

You can have confidence in your chromatographic results knowing that each lot of septa goes through a demanding QC test to ensure that only the highest quality