90731800 - Airborne particle monitoring

CPV code 90731800 in the EU Common Procurement Vocabulary refers to Airborne particle monitoring. 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 airborne particle monitoring. As a leaf code, 90731800 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 airborne particle monitoring. Contracting authorities across the EU use 90731800 in TED notices and national procurement portals to signal that a tender relates to airborne particle monitoring.