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CHROMtalks - Troubleshooting GC Sample Introduction

GC instrumentation is mechanically relatively simple and robust. However, there are a few key areas where problems regularly arise. One of the most important parts of a GC method is getting your sample onto the column for analysis. If you get this wrong, the data will be incorrect and you’ll be left with a difficult problem to troubleshoot. This presentation will therefore focus on the process of GC sample introduction and where it can go wrong—from issues with the autosampler components, to contamination, then on to the inlet. Topics addressed will include needles, plungers, contamination, septa (bleed and leaks), liners (contamination, adsorption), and split/splitless inlets.