ODOR Compact GC

Gas chromatograph for odorization control of Gasodor S-Free and Spotleak Z

CompactGC for Gasodor S-Free measurement

The gas chromatographic method with CompactGC and enrichment unit ensures that Gasodor S-Free™ is separated from all other natural gas components before the concentration is determined in the detector. There is therefore no cross-sensitivity to other natural gas components. The system is capable of determining THT as well as Gasodor S-Free. This also makes the CompactGC the ideal measuring instrument for the new odorant Spotleak™ Z (88 % ethyl acrylate 12 % THT).

In contrast to other measuring methods, both main components of Gasodor S-Free (methyl acrylate and ethyl acrylate) are measured separately. This makes it possible to check the correct ratio of both substances in Gasodor S-Free.


  • The enrichment technique enables superior accuracy and sensitivity at concentrations around 8.8 mg/m³ (minimum concentration for Gasodor S-Free™ according to DVGW worksheet G280).
  • The calibration gas can be prepared in nitrogen at low cost.
  • The analysis is independent of natural gas type and natural gas source (e.g. L- or H-gas).
  • The proven technology of the CompactGC is adapted to the S-Free application.
  • Remote transmission of measurement data is optionally available via 4-20 mA.
  • The system can be used mobile or stationary.
  • The DVGW (German Gas and Water Industry Association) recommends the gas chromatographic method as the reference method for odorization control.

The CompactGC is equipped with a cooled enrichment unit for the Gasodor S-Free application. This unit is capable of collecting the odorant in a defined manner. In a second step, the concentrated odorant is injected onto the separation column of the gas chromatograph and analyzed. The CompactGC is controlled by a software included in the delivery. Commercially available GC columns are used as separation columns. This is a clear advantage over the Micro GC, where the complete module (injector, column and detector) is always replaced. The CompactGC columns are easy to exchange and inexpensive.

Do you have questions regarding the product? I would be glad to help you or to connect you with the right contact person.

Benjamin Langabel
Customer Service Specialist
+49 2339 1209-59
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