<p>BTEX Analyzer Module</p>

BTEX Analyzer Module

The BTEX module is designed to measure ambient benzene, toluene, ethylbenzene, and xylene at levels relevant for human health and ozone precursor studies. The module is ideal for measurement at both fence line and urban sites.

Benzene is found in ambient air because of burning fossil fuels, evaporation at gasoline storage and filling stations, and motor vehicle exhausts. The World Health Organization (WHO) classifies benzene as a group one carcinogen. The EU’s outdoor air limit value is 3.5 µg/m3.

Toluene, ethylbenzene, and xylene are important industrial solvents used in a variety of processes and products. All are ozone precursors.

The BTEX module is only available in new AQM 65’s, it cannot be retrofitted into existing equipment.

Learn more about BTEX measurement principles, specifications and performance on the BTEX measurements page.

Module specifications

Sensor Code


Range (ppb)

0.1 - 50

Display Resolution (ppb)


Noise Zero (ppb)


Limit of Detection (ppb)


24 hr Drift

<2% FS