Source: https://tendernation.io/opportunities/01a13cf3-13a8-7372-bd32-1ed4d7be9c35/c27283-nox-gas-analysers-sta-2024-2025 awarded GB direct award procedure # C27283\_NOx Gas Analysers STA 2024 -2025 [Environment Agency](https://tendernation.io/buyers/environment-agency) Estimated value Not stated Published 20 Dec 2024 Deadline Closed 28 Nov 2024 ## About this tender The AURN is the UK's largest automatic monitoring network and is the main network used for compliance reporting against the Ambient Air Quality Directives. It includes automatic air quality monitoring stations measuring oxides of nitrogen (NOx), sulphur dioxide (SO2), ozone (O3), carbon monoxide (CO) and particles (PM10, PM2.5). These sites provide high resolution hourly information. Further details of the current network are available on [http://uk-air.defra.gov.uk ](http://uk-air.defra.gov.uk%C3%A2%C2%80%C2%AF) The Environment Agency on behalf of the Department for Environment, Food and Rural Affairs (Defra), Affiliated Local Authorities and Devolved Administrations is seeking to procure gas analysers to measure the following gases: oxides of nitrogen (NOX), nitrogen dioxide (NO2), ozone (O3) and sulphur dioxide (SO2). The gas analysers will in general be used on the UK's largest Air Quality Monitoring Network the AURN and the associated Automatic London Network (ALN). The Environment Agency reserves the right to use the instruments for other Air Quality Monitoring activities.   The Environment Agency manages and maintains the AURN and ALN, which monitors air quality across the UK. The gas analysers are managed by the Central Management and Control Units (CMCU) (further defined below) and it has been indicated that a number of replacements are required due to the equipment having a critical parts failure, becoming damaged, not producing data of sufficient quality, reaching the end of life, or not having sufficient available spare parts from the manufacturer.   Read full description ## CPV classification Air quality management Source Contracts Finder (UK) [View official notice](https://www.contractsfinder.service.gov.uk/notice/cb3cd9f9-85f9-452f-9385-a0d81727f8d1) Never miss a tender like this again Get AI summaries, deadline alerts and a bid pipeline for tenders matched to your business. Free to start. [Track tenders free](https://tendernation.io/register) [Buyer profile Environment Agency: past awards and live tenders](https://tendernation.io/buyers/environment-agency) [Sector More Sewage, refuse, cleaning & environmental tenders](https://tendernation.io/sectors/sewage-refuse-cleaning-environmental) ## More tenders like this [SHWD Cleaning · South Hams District Council · 32 days left · 20 Nov 2026](https://tendernation.io/opportunities/01a15552-1e5c-7112-a772-bb30d175a2ae/shwd-cleaning) [Pest Control Services · Yorkshire Housing Limited · 28 days left · 16 Nov 2026](https://tendernation.io/opportunities/01a15552-1ecb-72eb-99a2-28725729b3f4/pest-control-services) [Pest Control Services Concession 2027-30 (FH2610191) · The District Council of Folkestone and Hythe · 29 days left · 17 Nov 2026](https://tendernation.io/opportunities/01a154e4-44f9-7309-afae-daba3a678a46/pest-control-services-concession-2027-30-fh2610191) [Invitation to Tender Window Cleaning Services - Wirral · Wirral Community Health and Care NHS Foundation Trust · 32 days left · 20 Nov 2026](https://tendernation.io/opportunities/01a1539a-cf1d-702b-9ffd-93cfa91d3c7c/invitation-to-tender-window-cleaning-services-wirral) [Refuse transport services – Odbiór odpadów komunalnych z terenu miasta Maków Mazowiecki · Miasto Maków Mazowiecki · 35 days left · 23 Nov 2026](https://tendernation.io/opportunities/01a15183-3f12-7325-9c2f-18eb44993615/poland-refuse-transport-services-odbior-odpadow-komunalnych-z-terenu-miasta) [Cleaning services – Úklidové služby pro budovy JP · České vysoké učení technické v Praze · 15 days left · 3 Nov 2026](https://tendernation.io/opportunities/01a15183-4b75-72e0-8073-c7b65b5d95d9/czechia-cleaning-services-uklidove-sluzby-pro-budovy-jp)