Tips from our Experts

Gas Chromatography Troubleshooting Tips

Example: GC Troubleshooting Steps

An analyst observed that no peaks appeared during a GC-FID analysis. The flowchart below shows a logical progression of steps that can be used to identify the cause and correct the problem.

Please click here for the original ‘Gas Chromatography Troubleshooting Poster’.

Symptoms and Solutions

Good chromatography is critical to obtaining accurate, reproducible results. Coelutions, asymmetric peaks, baseline noise, and other other issues are common challenges in the GC laboratory. These analytical problems and others can be overcome by troubleshooting your seperations using the tips below.

Poor Resolution



Poor Retention Time Reproducibility


 

Fronting / Tailing Peaks



Split Peaks



Carryover / Ghost Peaks



High Bleed



Unstable Baseline (Spiking, Noise, Drift)



Response Variation



No Peaks



Broad Peaks