Kore Compact
EI-TOF-MS
Transportable EI-TOF-MS for rapid and sensitive gas analysis
A compact, computer-controlled electron-impact time-of-flight mass spectrometer for rapid gas analysis, process monitoring, catalysis studies, reaction kinetics, and VOC detection in laboratory or on-site environments.
Trusted by laboratories, universities and industrial research facilities worldwide.
< 1 sec
Response Time
Additional Data
1000+
Mass Resolution
Additional Data
50ppb
Detection Levels
Additional Data
Pressure Range
Benzene Detection
Additional Data
Powerful Performance.
Anywhere you need it.
The Kore Compact EI-TOF-MS is a modular, computer-controlled time-of-flight mass spectrometer available as a bench-top instrument. Its compact size and transportable design make it suitable for moving between laboratories, production sites, field locations, or customer facilities where rapid and sensitive gas analysis is required.
The system is well suited to production and research applications, including process monitoring, catalysis studies, reaction kinetics, VOC monitoring, cleanroom air quality, and odour analysis. It analyses gases at pressures from millibars to 10 bar and can support stable long-term measurements as well as short-duration, high time-resolution experiments.
Key Features.
Transportable bench-top design
Compact 440 × 280 × 520mm format for on-site use.
Electron ionisation source
70eV EI produces database-searchable fragmentation patterns.
Capillary inlet
Compact 440 × 280 × 520mm format for on-site use.
Membrane inlet
Compact 440 × 280 × 520mm format for on-site use.
High time-resolution mode
Compact 440 × 280 × 520mm format for on-site use.
Process monitor mode
Compact 440 × 280 × 520mm format for on-site use.
GC interfacing capability
Compact 440 × 280 × 520mm format for on-site use.
Software sensitivity settings
Compact 440 × 280 × 520mm format for on-site use.
Specifications.
| SPECIFICATION | VALUE |
|---|---|
| Concentration range | Ppb levels to 100%, with four software sensitivity settings |
| Maximum sensitivity (capillary inlet) | Krypton in air at 1.1 ppm in 10 seconds; Xenon in air at 90 ppb in 1 minute |
| Maximum sensitivity (membrane inlet) | Benzene detection limit below 50 ppb in 10 seconds |
| Mass resolution | Greater than 1000 m/Δm (FWHM) |
| Mass range | No inherent TOF limit; practical range 1–1000 m/z for gas-phase thermochemistry |
| Ion source | 70 eV electron impact, compatible with NIST database searching |
| Dimensions | 440 × 280 × 520 mm |
| Pumping | 85 L/s turbomolecular pump backed by a diaphragm pump |
| Ion source baking | Up to 100°C; hot source available on request |
| Supplied inlets | Capillary inlet and membrane inlet |
| Response time | Below 1 second with capillary inlet |
| Membrane response time | Approximately 10 seconds for benzene |
| Time to operation after transport | Approximately 30 minutes |
Applications.
How It Works.
The Compact EI-TOF-MS uses electron ionisation to ionise gas-phase analytes before time-of-flight mass analysis. In EI, a beam of electrons, usually at 70eV, removes an electron from the analyte molecule during collision. This produces molecular and fragment ions that create a characteristic mass spectral pattern.
Because EI is a hard ionisation technique, it often produces many fragment ions. These fragmentation patterns can be compared with established databases such as NIST, supporting compound identification and mass spectral deconvolution. EI is especially widely used for VOC and SVOC analysis.
Gas samples can be introduced through different inlet systems. The capillary inlet supports very rapid analysis of inorganic gases and higher-concentration VOCs, while the membrane inlet improves sensitivity for VOC detection. The instrument can also be coupled to a gas chromatograph, including Kore’s PREFICS system, to operate as a fast MS detector for separated compounds.
Configurations / Options.
Capillary inlet
Standard inlet for rapid inorganic gas and high-concentration VOC analysis.
Membrane inlet
70eV EI produces database-searchable fragmentation patterns.
GC interface option
Compact 440 × 280 × 520mm format for on-site use.
PREFICS coupling
Compact 440 × 280 × 520mm format for on-site use.
Multi-position valve integration
Compact 440 × 280 × 520mm format for on-site use.
Internal and external heated inlet lines
Compact 440 × 280 × 520mm format for on-site use.
Desorber inlet modules
Compact 440 × 280 × 520mm format for on-site use.
Flight case option
Compact 440 × 280 × 520mm format for on-site use.
Operating Modes.
High Time-Resolution Mode
For short-duration experiments, typically up to around 20 minutes, the system can stream information from all detected ions directly to disk. The data can then be replayed with the experiment time resolution selected by the user, subject to counting statistics.
This allows users to request full mass spectra in time slices as short as 100ms, or to plot the time evolution of any selected species at 100ms resolution. This mode is useful for extracting maximum information from short-term or rapidly changing experiments.
Process Monitor Mode
For longer experiments lasting many hours or days, it is not practical to store every recorded ion continuously. Instead, the user can request that a mass spectrum of a defined duration is acquired at defined intervals.
In this mode, selected species are plotted live against elapsed experiment time. A full mass spectrum can also be saved at each data point, allowing users to reconstruct the time evolution of any mass species after the experiment at the time resolution set by the recording frequency.
Integration
The Compact EI-TOF-MS can be used as a stand-alone bench-top gas analyser or integrated into wider analytical workflows. It can connect to gas inlet modules, heated inlet lines, desorption systems, GC interfaces, and customised process gas sampling arrangements.
For field or multi-site use, the instrument can be transported in reusable padded wooden crates or optional shock-protected flight cases. After transportation, the time to operation is approximately 30 minutes, making the system suitable for mobile or site-based measurement work.
Technical Resources.
Expert Support.
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