DFS™ High Resolution GC/MS Mass System

Achieve outstanding sensitivity for analysis of POPs with the Thermo Scientific™ DFS™ High Resolution GC/MS System. The DFS double-focusing system is the highest performance mass spectrometer ever built for target compound analysis. Injecting as little as 20fg of TCDD onto the column will give an exceptional signal/noise ratio (greater than 200:1). A product of 50 years of experience in developing magnetic sector MS, the DFS system has all the performance you need in a package that will fit in a small laboratory.

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Catalog #
>200:1 for 20

Full specifications
Mass Range 2 to 6000 d
MS Scan Power 0.1 to 10000 Da/sec.
Mass Accuracy <2ppm
Sensitivity >200:1 for 20
Resolution >60,000amu
Voltage 230V
Modes Full range of ionization modes available: EI, CI, FAB, FD/FI
Item Description DFS high resolution GC/MS; Configurable

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    Product Description

    Operation as Simple and Straightforward as a Typical Benchtop MS

    • Automatic tuning
    • Automatic universal mass calibration: Field-based calibration, i.e. mass calibration is independent of scan speed, polarity, ionization mode
    • Unattended automatic operation
    • Intuitive user interface and set-up
    • Comprehensive and flexible data evaluation and reporting
    Outstanding Sensitivity and Specificity with High-throughput
    • Exceptional S/N ratio with extraordinarily low limit of detection: 20fg TCDD on-column in high resolution MID mode gives S/N 200:1
    • Detection system with ±20kV conversion dynode and long-life secondary electron multiplier for efficient detection of ions
    • Low limits of quantitation
    • Mass range of 2-6000Da
    Ease of Ownership
    • Fits into a small laboratory
    • Reduced power consumption
    • Quieter than many other instruments
    • Requires little installation time
    • Immediately productive
    Other Key Features
    • Full range of ionization modes available: EI, CI, FAB, FD/FI
    • Pneumatically actuated exchange lock for ventless exchange of ionization volumes
    • Removable ion volumes for easy source maintenance
    • Radially laminated magnet
    • High performance toroidal ESA
    Recommended For:
    • EI/CI
    • Positive and negative ions
    • Solids probe
    • FAB
    • Other ionization and inlet techniques


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