Tier 2 | Tech Comparison

MRR vs GC-MS

GC-MS Slows You Down.

GC-MS is a powerful standard, but targeted workflows often become complex when chromatography must be optimized for each matrix, compounds are difficult to separate, or structurally similar analytes require additional effort to confirm with confidence.

MRR Speeds Up Complex Analysis.

MRR replaces separation-first analysis with structure-specific detection. By identifying compounds through their unique rotational fingerprints, it reduces reliance on chromatographic optimization and enables clear, confident results, even for difficult-to-separate or closely related analytes.

Frequently Asked Questions

What is the difference between GC-MS and MRR?

GC-MS separates compounds chromatographically before mass analysis, while MRR identifies target molecules by their unique rotational spectra. For targeted analyses, MRR can reduce chromatography-dependent method development while improving specificity for structurally similar compounds.
What types of molecules are suitable for MRR analysis?

MRR works best with small molecules. To read a molecule's molecular "fingerprint", MRR requires molecules to have a dipole moment and to have polarity.
When is MRR a better choice than GC-MS?

MRR is often a better fit when analyzing known target compounds, especially in workflows that involve difficult matrices, closely related analytes, or time-intensive chromatography method development.
Do I still need GC-MS if I use MRR?

In many labs, GC-MS remains valuable for broad, untargeted screening. MRR is best used for targeted analyses where specificity, speed, and simplified workflows are priorities.