AIR MONITORING The Benefits of the 6400 Visibility Sensor From Met One Are Clear to See. Major UK AQM Tender Win for Monitoring Equipement Specialist Request information Jan 29 2018 Comments 0 Monitoring equipment specialist, Enviro Technology Services (ET) , is pleased to announce that it has been awarded a large contract with the Environment Agency to supply new and replacement particulate monitors for the AURN. The two-year contract (with an option for a further two years) followed a successful tender bid for the Stroud-based firm. The contract will see ET supply the network with Defra MCERTS approved BAM 1020 particulate monitors for PM10, PM2.5 and PMcoarse (PM10 and PM2.5 combined) as part of an eventual replacement programme of up circa 100 particulate monitors. https://www.envirotech-online.com/news/air-monitoring/6/enviro-technology-services/major-uk-aqm-tender-win-for-monitoring-equipement-specialist/44953