90731400 - Air pollution monitoring or measurement services

CPV code 90731400 in the EU Common Procurement Vocabulary refers to Air pollution monitoring or measurement services. It sits at level 5 of the CPV hierarchy as a subcategory within the 90 division. This code is nested directly under 90731000, narrowing the broader category into the specific area of air pollution monitoring or measurement services. As a leaf code, 90731400 has no further subdivisions and represents the most precise classification available in this branch — buyers should reference it directly in tender notices when the procurement primarily concerns air pollution monitoring or measurement services. Contracting authorities across the EU use 90731400 in TED notices and national procurement portals to signal that a tender relates to air pollution monitoring or measurement services.