VOC72M Volatile Organic Compounds Analyzer BTEX


The VOC72M’s metrology, in accordance with EN 14662-3 (2005) &  EN 15267-1 (2009) standard for benzene measurement, is based on gas chromatography (GC) coupled with a photo-ionization detector (PID).

Compact and fully automated analyser providing equal performance to the laboratory chromatographs; particularly well-suited for fixed or mobile ambient air quality monitoring stations.
• Standard measured compounds: Benzene, Toluene, Ethylbenzene, m+p-Xylene, o-Xylene, 1-3 Butadiene (other compounds on request)

  • Brand


Envea Ambient


  • Standard measured compounds: Benzene, Toluene, Ethylbenzene, m+p-Xylene, o-Xylene, 1-3 Butadiene…
  • Performs all the functions, such as: sampling, analysis and data management, in a simple and completely autonomous mode
  • Self-contained, completely automated and ready to use in less than 30 minutes
  • GC column equipped with an innovative liquid-cooler; retention times are stable even with a fluctuating temperature
  • Long-life capillary column
  • High sensitivity, stable and linear response PID detector
  • Ultrafast trap heater (heating rate >160°C/second)
  • Quick check of the chromatogram peaks possible directly on-screen, without the use of a computer
  • Low memory effect allowing the automatic calibration of the analyser on a single cycle without an external PC
  • Carrier Gas : N2 (Nitrogen)


Technical specifications
Measured parameter VOC (Benzene, Toluene, Ethylbenzene, m+p-Xylene, o-Xylene, 1,3 Butadiene)
Technology Gas Chromatography
US-EPA Approval / QAL 1 Certification YES
Measurement ranges
  • up to 1000 µg/m3 
  • maximum factory standard range for benzene: 90 µg/m3,
    user-selectable up to 180 µg/m3
    (higher range possible on request)
Measurement units ppb, ppm, µg/m3 (user-selectable)
Noise (σ) ≤ 0.025 µg/m3 at 0.5 µg/m3 benzene
Lower Detectable Limit (2σ) ≤ 0.05 µg/m3 benzene
Zero drift ≤ 4% / 15 days
Span drift < 1% / 7 days
Sample flow rate 50 ml/min
Temperature range 0°C to +30°C
Data storage 1 year
Included I/O 1LAN / 1USB / WIFI / RS232-422
Weight (Kg) 12.5
Dimensions mm (LxWxH) 483 x 606 x 133
Chassis 19″ Rack, 3U
Power supply ‘100~250Vac, 50/60Hz + ground


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