Thermo Scientific™ Velos Pro™ dual-cell linear ion trap mass spectrometer: Accelerating innovation with MSn

Significance of the Topic

The Velos Pro dual-cell linear ion trap mass spectrometer enhances structural characterization through multi-stage MSn, delivering higher sensitivity than traditional SIM or SRM and supporting applications in proteomics, metabolomics, forensic analysis, clinical research and teaching.

Objectives and Overview of the Study

This specification note describes the instrument design, performance features and application capabilities of the Thermo Scientific Velos Pro, emphasizing its dual-pressure linear ion trap architecture and advanced fragmentation modes.

Methodology and Instrumentation

The instrument uses a high-pressure cell for efficient ion trapping and fragmentation and a low-pressure cell for high resolution and rapid scan rates. Fragmentation techniques include collision induced dissociation, pulsed q dissociation and higher energy collision induced dissociation. The Ion Max API source supports ESI, HESI, APCI and APPI. Ion optics feature S-lens technology and novel neutral blocking. Detection is accomplished with dual conversion dynode electron multipliers and a 24-bit electrometer. The system runs on Windows 10 with Xcalibur and FreeStyle software for acquisition and data analysis.

Main Results and Discussion

Sensitivity tests using 100 fg of reserpine show signal to noise ratios ≥ 100 at key fragment transitions in both HESI and APCI MS/MS and MS3 modes. Scan rates range from 125 000 Da/s (turbo) to 2 222 Da/s (ultrazoom), with mass accuracy of 0.1 Da and resolution down to 0.075 Da FWHM. The dual-pressure design and automatic gain control ensure consistent performance across multi-stage MS experiments.

Benefits and Practical Applications

The Velos Pro platform enables deep structural elucidation and confident compound identification in complex matrices. Its high dynamic range, fast polarity switching and automated calibration support high-throughput quantitative assays, trace-level metabolite profiling and forensic substance confirmation.

Future Trends and Potential Applications

Future developments may integrate ultra high-pressure LC, ion mobility separation, AI-driven data interpretation and fully automated clinical workflows. Expanded MSn strategies will enhance specificity in proteomics and metabolite analysis and support novel bioanalytical applications.

Conclusion

The Thermo Scientific Velos Pro dual-cell linear ion trap delivers versatile, high-sensitivity multi-stage mass spectrometry, making it well suited for a broad range of analytical challenges in research and industry.

References

Thermo Fisher Scientific PS63409-EN 0819S Product Specifications