High-precision instruments for air quality monitoring, particle measurement, and environmental analysis – built for reliability, accuracy, and compliance.
Continuous VOC speciation is one of the more demanding tasks in ambient air monitoring: dozens to hundreds of compounds, often at trace concentrations, need to be separated, quantified and identified without interrupting an operational network. The autoGCMS 866, developed by Chromatotec®, combines gas chromatography with flame ionisation detection (GC-FID) and quadrupole mass spectrometry (GC-MS) in a single stand-alone, rack-mounted instrument. It runs unattended in fixed monitoring stations and needs nothing beyond a mains power connection.
The autoGCMS 866 sits at the centre of Chromatotec's autoGCMS range and pairs a chromatographic separation stage with mass-spectrometric identification. A standard FID-only analyser can quantify a known, fixed set of compounds; the added MS detector allows this system to identify unexpected peaks in the field using an onboard NIST spectral library. Because both detectors are integrated into one platform, the instrument calibrates on a single reference compound and derives concentrations for others through FID Relative Response Factors and the Effective Carbon Number concept, rather than requiring individual calibration gas for every target VOC.
The autoGCMS 866 separates the sample on a gas-chromatographic column before splitting detection between a flame ionisation detector and a quadrupole mass spectrometer. The FID channel handles routine quantification across a linear detection range, while the MS channel — covering a mass range of 1 to 300 amu — adds compound-specific identification and extends sensitivity down to sub-ppt levels when combined with the airmoVOC C10-C40 expert front end. A Faraday cup detector is used for higher concentrations and for service diagnostics, while a SEM dynode detector extends sensitivity into the low-ppb range. Mass axis stability is stated at better than 0.2 amu per year, which limits how often the mass calibration needs to be checked.
Environmental agencies and monitoring network operators use the autoGCMS 866 where regulatory ozone-precursor or air toxics reporting is required. Universities and research institutes deploy it in atmospheric chemistry programmes that need wide VOC speciation rather than a small fixed compound list. Environmental consultants and industrial hygienists use it for fenceline and workplace exposure studies, and filtration equipment manufacturers use it during product development and efficiency testing.
Results, including full chromatograms, are stored on an embedded Windows-based computer with 128 GB of SSD storage, a 10-inch TFT colour display, four USB ports and two RS-232 ports. Communication runs over MODBUS RTU/JBUS or Modbus TCP, so the analyser can report into an existing SCADA or data acquisition system rather than operate as an isolated unit. Preventive maintenance is limited to an annual mass-tuning verification, according to the manufacturer, since routine calibration is handled automatically through the embedded permeation tubes and zero-air generator.
Dimensions, weight, power consumption/voltage, operating temperature range and enclosure/IP rating are not specified by the manufacturer on this source page.
Chromatotec provides a technical datasheet ("TSP autoGC-MS 866") directly covering this analyser, together with a related datasheet for the DET QMS module.
tsp_d30_DET_QMS.pdftsp_d30_autoGCMS_866.pdf
AAVOS supplies the autoGCMS 866 as part of its Benelux environmental monitoring portfolio, alongside product selection advice, installation, commissioning and calibration support. For networks running multiple stations, having a regional technical partner for maintenance and spare parts logistics can matter as much as the specification sheet, particularly for an instrument with embedded gas generation and permeation-based validation that still needs periodic verification. AAVOS engineers can also help align the analyser's configuration with specific regulatory requirements, such as the PAMS compound list or Annex VII of EU Directive 2024/2881, before installation.
The analyser combines gas chromatography with flame ionisation detection (GC-FID) and quadrupole mass spectrometry (GC-MS), allowing simultaneous quantification and compound identification within the same analytical cycle.
According to the manufacturer, the system can analyse more than 300 VOCs depending on configuration, including the PAMS list, the 47 VOCs from Annex VII of EU Directive 2024/2881, and additional biogenic and oxygenated compounds.
The manufacturer states a direct MS detection limit below 50 ppb for benzene, improving to below 10 ppt when paired with the airmoVOC C10-C40 expert front end, or below 10 ppb when paired with ChromaFID.
Cycle times range from 4 milliseconds to 60 seconds in standard configuration. Full GC-MS cycles for around 10 to 30 VOCs typically take a few minutes, while trap-based cycles covering more than 100 compounds can take up to 60 minutes.
No. The system uses an onboard zero-air generator together with certified multi-compound permeation tubes for automatic self-validation, which removes the need to store or transport calibration cylinders.
The analyser is referenced against US EPA Method 18, and the manufacturer states it has been used within workflows aligned with US EPA TO-14 and TO-15 for air toxics monitoring, as well as the PAMS programme and EU Directive 2024/2881.
Yes. It communicates via MODBUS RTU/JBUS or Modbus TCP and supports full remote control and data reporting, which allows integration into most SCADA or data acquisition platforms already in use by monitoring networks.
The manufacturer specifies preventive maintenance limited to an annual mass-tuning verification, since routine calibration is handled automatically through the embedded permeation tubes and gas generator.
Considering the autoGCMS 866 for an ambient air, fenceline or industrial hygiene monitoring project? Contact AAVOS for a configuration proposal, the full manufacturer datasheet, or advice on matching the instrument to your specific compound list and regulatory requirements.
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