Enviro Technology Services plc (ET) was founded in 1983. Now active in over 45 countries with a multi-million pound turnover. ET is a global provider of air quality and emissions monitoring systems and servicing. The UK-based company sell and lease equipment, systems and services covering the monitoring of ambient air quality (AQM), continuous emissions (CEM) and indoor air quality. ET also supplies cutting-edge analytical equipment for scientific, process and research monitoring including the monitoring of greenhouse and toxic gases.