Vanquish Charged Aerosol Detectors - PRODUCT SPECIFICATIONS

Significance of the topic

The ability to detect and quantify non-volatile and semi-volatile compounds in liquid chromatography workflows is critical for both research and routine quality control. Charged aerosol detection expands the range of detectable analytes beyond those amenable to UV or fluorescence, delivering consistent responses independent of chemical structure and enabling reliable quantification even when standards are not available.

Objectives and study overview

This document presents the performance characteristics of two Thermo Scientific Vanquish Charged Aerosol Detector models (H and F). It aims to compare their operational parameters, illustrate integration within a complete Vanquish LC platform and highlight their applicability for analytical R&D and manufacturing QA/QC.

Methodology and Instrumentation

Liquid chromatography eluate is nebulized into an aerosol, dried in a temperature-controlled evaporation chamber, and particles are electrically charged before passing into an electrometer. Key instrument features include:

• Vanquish Charged Aerosol Detector H: adjustable evaporation temperature (ambient +5 °C to 100 °C), 0.01–2.0 mL/min flow rate, 200 Hz data acquisition.
• Vanquish Charged Aerosol Detector F: fixed evaporation temperatures (35, 50, 70 °C), 0.2–2.0 mL/min flow, 100 Hz data acquisition.
• FocusJet concentric nebulizer: compatible with HPLC, UHPLC and microflow configurations without hardware changes.
• Viper fingertight fluidic connections for rapid setup and minimal dead volume.
• Chromeleon CDS integration for single-point intelligent control, audit trailing and predictive maintenance alerts.

Main Results and Discussion

Both detector models deliver high sensitivity and low baseline noise suitable for trace analysis. The following performance highlights were reported:

• Linear dynamic range of up to four orders of magnitude for non-volatile analytes.
• Selectable digital filter constants (0.1–10 s) for noise suppression.
• Stable operation with nitrogen or compressed air (regulated at 4.8–5.5 bar, ≤4 L/min consumption).
• Built-in safety features: pump flow shutdown on leak detection, high evaporation temperature alerts, gas over-pressure relief.
• GLP-compliant logging of service intervals, filter changes and system parameters.

Benefits and Practical Applications

The Vanquish CAD series enables:

• Semiquantitative analysis without authentic standards by exploiting uniform detector response.
• Enhanced sensitivity for low-abundance impurities in pharmaceutical formulations.
• Robust daily operation in QA/QC labs, minimizing downtime and maintenance overhead.
• Flexible method development in research settings, with tunable parameters to optimize sensitivity and resolution.

Future Trends and Opportunities

Advances in microflow and nanoflow LC will drive demand for detectors capable of sub-microliter sensitivity. Integration with machine-learning algorithms for real-time data interpretation and predictive maintenance is expected to improve lab productivity. Greener carrier gas solutions and miniaturized detection modules will further reduce consumable costs and environmental impact.

Conclusion

Thermo Scientific Vanquish Charged Aerosol Detectors H and F offer a highly integrated, reproducible solution for universal detection of non-volatile analytes. Their performance, flexibility and software integration make them suitable for both discovery research and routine manufacturing QC.

Instrumentation used

• Vanquish Charged Aerosol Detector H (model VH-D20-A)
• Vanquish Charged Aerosol Detector F (model VF-D20-A)
• FocusJet concentric nebulizer
• Thermo Scientific Viper fingertight fittings
• Thermo Scientific Chromeleon CDS software
• Optional Corona Nitrogen generator or oil-free air compressor