A GC/FID instrument for automatic, continuous monitoring of BTEX in air, water or soil

  • Model: AirmoVOC BTEX MCERTS
  • Manufacturer: Chromatotec

The airmoVOC BTEX MCERTS is a gas chromatograph (GC) for analysis and monitoring of trace amounts of benzene, toluene, ethylbenzene, (m/p/o) xylene by FID detection.


  • Monitoring of urban and non-urban pollution
  • Monitoring of industrial nuisance
  • Industrial health and safety monitoring
  • Process Qulaity Control
  • Waste water (headspace / ppt)
  • Drinking water
  • CO2 purity control for drinks market…


  • Automatic sampling and concentration using an absorbant trap
  • Desorption from the trap and injection into a metallic capilliary column regulated by a temperature gradient. The H2 pressure at the column head is controlled by a piezo valve.
  • The detection of all compounds eluting from the column is performed by a FID detector

Key points

The airmoVOC BTEX MCERTS is equipped with an integrated PC including the Vistachrom software. The internal calibration option CALIB allows for automatic validation of results at low ppb.. (Certified Benzene tube at ± 10%).

The instrument is robust, compact and very low maintenance and offers excellent result quality : repeatability, linearity, stability and sensibility (ppt).

TÜV Certificate for BTEX in 1996 MCERTS Certificate for A21022 : Sira MC130231/03, 25 July 2018 Selected by national US EPA

VISTACHROM® software

The software developed by Chromatotec® allows:

  • Remote monitoring
  • Full traceability through archiving of results and QC
  • Set up and control of threshold alarms
  • Export of data MODBUS / 4-20mA / 0-10V


  • DET QMS for online GCMS
  • AirmoVOC BTEX expert 1 ppt LDL
  • Automatic validation and calibration with internal CALIB
  • 24 V DC power supply
  • Hydrogen and zero air generators for autonomous analysers
  • Multiplexer: 2 to 32 streams
  • Purge module to extract VOC from water for online VOC in water analysis
  • Internal or external multipoint calibration and zero with CALIB MFC, XXXCYL MFC, airmoCAL PAH
  • airmoVOC C6C12 for more VOCs
  • airmoVOC C6C16 for more VOCs and S VOCs
  • Analog output 4-20 mA or 0-10 V
  • Wall mounted box XXX934

BTEX analysis: 8 compounds

  • 8 compounds with 7 peaks: Benzene, Toluene, Ethylbenzene, M+P Xylene, O Xylene, Cyclohexane* and Styrene*
  • More VOCs in option: Naphtalene, Phenol, 1.3 Butadiene

Detection limit:

  • Benzene < 20 ppt or 0,064 µg/m3

Standard detection range:

  • 0,1 to 380 µg/m3 for Benzene
  • standard amibient air monitoring 0 to 50 µg/m3

Relative Standard Deviation:

  • < 0.3 % over 48 h (retention time)
  • < 3 % over 48 h (concentration)


  • Full result storage (data and chromatogram)
  • Embedded computer Windows® based with LCD display
  • 128 GB of Hardware storage on SSD memory
  • 4 USB Connecting Port
  • Two RS-232 ports
  • Display: 10’’ TFT Color LCD
  • MODBUS RTU / JBUS communication protocol

Cycle time:

  • 15, 20 or 30 min (A21022 BTEX Mcerts)
  • 30 min (A21022 BTEX-B Mcerts) • 20 min (A26022)

Gas supply:

  • H2 (FID and carrier gas): 30 ml/min (supply 2 bar ; 1/16’’double ferrule
  • Air (FID) : 180 ml/min (supply 3 bar ; 1/8’’double ferrule
  • Sample supply (sample pump) 1/4’’double ferrule
  • Pneumatic valve 90ml/commutation

Operation Temperature:

  • Room with air conditioning: 10 to 35°c

Power supply:

  • Main: 230V / 115V or 50 Hz / 60Hz
  • Battery: 24V (option)

Electrical consumption:

  • Average: 150 VA ; Peak : 360 VA

Dimensions and weight:

  • Rack: 19’’ (5U)
  • Height: 222 mm
  • Width: 482 mm
  • Depth: 600 mm
  • Net weight analyser: 22 kg



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