Accelerating high-confidence insights for small- and large-molecule research using the Orbitrap Exploris 240 mass spectrometer

Importance of the Topic

High-resolution accurate-mass (HRAM) mass spectrometry has become a cornerstone of modern analytical chemistry. It enables unambiguous identification and precise quantitation of a broad range of analytes—from small metabolites to large protein assemblies—critical for drug discovery, clinical proteomics, biomarker validation and quality control in biopharmaceutical development.

Objectives and Overview

This summary highlights the performance and versatility of the Thermo Scientific Orbitrap Exploris 240 mass spectrometer. It reviews key hardware innovations and software workflows that deliver sub-ppm mass accuracy, up to 240,000 resolution at m/z 200, fast scan rates and intelligent acquisition for proteomics, metabolomics, lipidomics and biotherapeutic characterization.

Methodology and Instrumentation

The Orbitrap Exploris 240 integrates multiple technological advances:

• EASY-IC internal calibration source for consistent sub-ppm mass accuracy over days.
• Advanced Quadrupole Technology (AQT) for high-transmission precursor isolation.
• Ion-Routing Multipole (IRM) for efficient HCD fragmentation.
• High-Field Orbitrap analyzer delivering 240,000 FWHM at m/z 200.
• Optional FAIMS Pro interface for gas-phase fractionation and enhanced selectivity.
• AcquireX intelligent data acquisition workflows for deep small-molecule profiling.
• BioPharma option extending the mass range to m/z 8,000 for intact native analyses.

Used Instrumentation

• Thermo Scientific Orbitrap Exploris 240 mass spectrometer
• Thermo Scientific EASY-IC internal calibration source
• Thermo Scientific FAIMS Pro interface
• Advanced Quadrupole Technology (AQT)
• Ion-Routing Multipole (IRM)
• Evosep One LC system (for high-throughput workflows)
• BioPharma Finder, Proteome Discoverer, Compound Discoverer software

Main Results and Discussion

Proteomics performance was demonstrated with HeLa digest standards: 10 ng on column yielded ~1,600 protein groups; 1,000 ng delivered ~6,700 protein groups at 1% FDR using FAIMS at two CVs. Label-free quantitation showed high precision across replicates and accurate fold-change determination in spike-in experiments. TMT multiplexing with 11plex or 16plex reagents achieved precise quantification and low interference when combined with FAIMS. The scalable uHTPPP workflow processed >1,000 plasma samples in under five days with stable mass accuracy and retention times. Native and subunit analyses of monoclonal antibodies at loads down to 0.2 µg provided confident glycoform distributions and intact mass profiles. AcquireX workflows with deep scan mode increased small-molecule coverage and generated high-quality MS² spectra with minimal manual setup.

Benefits and Practical Applications

• Rapid turnaround and reduced method development time.
• Sub-ppm mass accuracy over extended runs ensures confidence in molecular formula assignments.
• High throughput for large clinical and translational studies.
• Versatility across discovery proteomics, targeted quantitation, metabolomics and biotherapeutic analysis.
• Compact footprint, robust design and easy serviceability maximize uptime.

Future Trends and Opportunities

Integration of DIA workflows, artificial-intelligence-driven data analysis and further automation will drive deeper proteome and metabolome coverage. Expansion of native mass spectrometry and multi-omics platforms will accelerate biomarker discovery, cell-therapy characterization and on-site clinical testing. Enhanced cloud connectivity and real-time data feedback are expected to streamline large-scale studies and personalized medicine applications.

Conclusion

The Orbitrap Exploris 240 mass spectrometer sets a new standard in HRAM performance, combining high resolution, sub-ppm accuracy, speed and intelligent acquisition. Its adaptable design meets the evolving needs of analytical chemists in proteomics, metabolomics and biopharmaceutical research, delivering fast, reliable and confident insights across small and large molecule applications.