Imspex Diagnostics Ltd.

Model GC-IMS - Multipurpose Analytical Instrument


A multipurpose analytical instrument combining the separation afforded by Gas Chromatography with the very sensitive detection of Ion Mobility Spectrometry. This is a perfect instrument when rapid, sensitive, accurate and quantitative analysis of gas samples is needed.

The GC-IMS has the following features:

  • Very fast, returning an analysis result within minutes
  • Rugged and robust, can be operated in tough environments
  • No need for helium or vacuum pumps, works at atmospheric pressure with CO2 or nitrogen gas.
  • Extremely sensitive to low ppbv or even pptv level
  • Suitable to be deployed in-line, at-line or standalone
  • Integrated software can be interacted with on the instrument or data moved to a PC for further analysis

There are many applications for our GC-IMS instrument, and this area will in future contain extensive information on applications, application notes, feasibility studies and articles.

Some of the most notable applications are:

  • Identification and quantification of siloxanes in biogas generation
  • Air safety in industrial environments (aluminium industry, chemical and explosive manufacturing, etc.)
  • Identification and quantification of natural gas odours
  • Early identification and quantification of H2S in gas and oil exploration

  • Working principle Ion Mobility Spectrometry with chromatographic pre-separation
  • Ionisation method Radioactive ß-radiation
  • Source Tritium (3H)
  • Activity 300 MBq, below the exemption limit of 1 GBq EURATOM guideline, no licence necessary
  • Column type Multi Capillary Column (MCC), type depending on application
  • Sampling Heated electrical 6-port-valve (stainless steel), Gas tight loop (1-10 mL)
  • Start-up time 5 minutes
  • Spectra analysis time Few seconds
  • Detection limits Typically in the low ppbv-range
  • Dynamic range Typically 1-3 order of magnitude
  • Display 6.4” TFT, VGA-display
  • Input unit Rotary pulse encoder, ESC- push-button
  • Processor 400 MHz x-Scale
  • Data acquisition Ultra fast ADIO-board
  • Data processing X-Board / Baseboard
  • Data storage Min. 1GB compact-flash memory or USB-Stick
  • Communication RS232, USB, Ethernet
  • Electrical connectors 2 x D-Sub 9-pole (for modem, console) D-Sub 15-pole (for external devices) RJ45 (for digital modem or SSH) 2 x USB-A
  • Power supply 100 – 240 V AC, 50-60 Hz (external) 24 V DC / 5A, XLR-connector (internal)
  • Power consumption < 120 Watt
  • Dimensions 449 x 375 x 177 mm or 17.7“ x 14.8“ x 7.0“ (WxDxH)
  • Weight 15,5 kg or 34,2 lb
  • Housing 19” compatible, IP 20 enclosure, EMC certified)
  • Cooling Axial ventilator, speed control temperature related, max. 5,5 m3/h
  • Gas connectors 3 mm stainless steel Swagelok connectors for drift gas inlet, sample gas in- and outlet, carrier gas inlet and IMS gas outlet)

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