The Vocus CI Series is a versatile lineup of mass spectrometers that combines the highest sensitivity and resolving power of chemical ionization with the flexibility of interchangeable reactors—perfect for even the most demanding research applications.
Each instrument in the series allows users to switch between the:
Vocus PTR Reactor for general VOC analysis
and the highly sensitive, selective Vocus Aim Reactor, optimizing detection for target analytes or adapting to evolving research needs. For enhanced separation, pair any system with the IMS option for real-time isomer separation, setting a new standard in precision and performance.
Features:
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Fast, real-time, direct analysis
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Sub pptv limits of detection
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Resolution exceeding 25,000 available
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Interchangeable Vocus PTR and Aim Reactors within minutes
- IMS option for isomer separation.
The Proton Transfer Reaction (PTR) reactor is a powerful system for analyzing a wide range of volatile organic compounds (VOCs).
The unique Vocus PTR reactor reduces wall losses and focuses ions with radio frequency (RF) fields to provide the highest sensitivity and low limits of detection.
Available with a variety of positive reagent ions for flexible VOC detection High sensitivity with quantitative detection of VOCs from pptV to ppmV No dependency on water vapor.
The Vocus Aim Reactor offers the fast and sensitive detection of trace organic and inorganic compounds spanning the entire volatility range. The flow tube reactor operates at an increased pressure to suppress fragmentation of analyte ions and uses compact VUV sources to generate both positive and negative reagent ions. Ultra-sensitive chemical ionization through the utilization of flexible reagent ion chemistries allows sensitive and selective ionization of a variety of compounds.
The Vocus IMS provides a rapid alternative to gas chromatography (GC) for analyses where precise isomer separation is crucial. In applications such as biology, food flavor analysis, and reaction kinetics—where high-throughput isomer separation is essential—the IMS-TOF achieves results in 50-100 milliseconds, dramatically faster than the tens of minutes required by GC.
Additionally, the Vocus IMS offers versatile functionality, seamlessly transitioning between IMS mode and traditional CI-TOF mode, enabling two-dimensional separation with both high resolution and ion mobility.
Application:
- Ethylene oxide monitoring
- PFAS detection
- Trace explosives detection
- VOC emissions plant
- Soil gas analysis
- Fenceline monitoring
- Emerging contaminants
- Aerosol particle composition
- Environmental chamber experiments.