Ion-Molecule Reaction & Electron Impact - Mass Spectrometer


The CombiSense is a combination of an Electron Impact (EI-MS) and an Ion-Molecule Reaction (IMR-MS) mass spectrometer in one analyzer unit for a broad range of applications.

This enables you to measure the main components in the volume percent range simultaneously with trace gases in the ppm and ppb level.


Functional Diagram


Typical Applications

The V&F CombiSense is state-of-the-art for most of the applications in the following fields:


  • Automotive Applications
  • Food, Beverages & Tobacco Applications
  • Environmental Applications
  • Medical Applications
  • Applications in various Industries

Success Stories


Automotive Industry

Environmental Industry - Immission

    Environmental Industry - Emission

    Environmental Industry - Indoor Room Air Quality

    Industrial Gases Industry

    Food, Beverages and Tobacco Industry

    Healthcare Industry

    Cement Industry

    Steel Industry

    Alternative Energies Industry

    Polymers, Tire & Rubber Industry

    Measureable Compounds with EI-MS (excerpt)

    Permanent Gases

    Substance name Molecular formula
    Hydrogen H2
    Oxygen O2
    Nitrogen N2


    Substance name Molecular formula
    Water H2O

    Rare Gases

    Substance name Molecular formula
    Helium He
    Neon Ne
    Argon Ar
    Krypton Kr
    Xenon Xe


    Substance name Molecular formula
    Methane CH4
    Benzene C6H6
    Toluene C7H8


    Technical Data IMR-MS Technical Data IMR-MS
    Mass range 7 – 519 amu Ambient temperature 20 °C - 35 °C
    Resolution ‹ 1 amu Humidity max. 80 % (non condensing)
    Analysis time ›= 1 msec/amu Gas consumption** 30 – 3,000 ml/min
    Measuring range* 10^5 Gas inlet temperature 50 °C – 190 °C adjustable
    Response time* T90 ‹ 20 msec Gas inlet pressure** 0.1 – 1 bar
    Lower detection limit* 0.4 ppt Power 230 V/50 Hz or 115 V/60 Hz 1000 W
    Concentration drift ‹ ± 5 % over 24 h Dimension (WxHxD) 534 x 806 x 639 mm
    Reproducibility ‹ ± 3 % Weight 100 kg
    Accuracy ‹ ± 2 %

    * depending on the components measured, system setup and the settings

    ** depending on the type of gas inlet System

    Reference Customers (excerpt)


    Product flyer