Open invitation to tender, deadline 06/03/2023, for measuring air quality in the Lille metro. For tender documents click here, where tenders must be sent. The contract value is EUR 400,000, excluding VAT. The contract duration will be 48 months. Contact Metropole europeenne de Lille, attn Roxane Ernst, tel +33 320212014, email marches.espacepublic-reseaux@lillemetropole.fr. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=052775-2023. Ref.n. 22TR35. 05/23.