Experts in Air

World Leading Environmental Monitoring Systems

Clean air

Local Authorities

Next generation monitoring equipment and systems for the measurement of urban pollutants



MCERTS Approved systems for CEM and process control

Scientific Research

Universities / Research

Specialising in greenhouse gas measurement technology for atmospheric chemistry, climate change, earth science and agricultural research applications

Product News

DR1000 Flying Laboratory

Drone Environmental Monitoring


Real Driving Emissions from Opsis

To monitor real driving emissions (RDE) from vehicles is a challenge. The analyser must be fast, accurate and easy to install onto a regular vehicle. The OPSIS technology uses a beam of light to detect the concentration of gases.


Blog posts

Visit blog

ET revamps Smogmobile mapping software

The Smogmobiles new mapping software is now interactive. Click on the link and have a look!

ET Managing Director, Duncan Mounsor, takes to the train in a bid to decrease his carbon footprint

As part of our ongoing commitment to encouraging a more healthy and environmentally friendly way to travel to work, ET’s MD’s route to work on Friday 30th Nov was quite different from the usual drive from Cheltenham to Stroud.     

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