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Directive (EU) 2024/2881 of the European Parliament and of the Council of 23 October 2024 on ambient air quality and cleaner air for Europe (recast) · European Union

‘PM2,5’ means particulate matter which passes through a size-selective inlet as defined in the reference method for the sampling and measurement of PM2,5, EN 12341, with a 50 % efficiency cut-off at 2,5 μm aerodynamic diameter;

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Source: EUR-Lex (Cellar) · retrieved 2026-10-16 · Text as adopted (Official Journal); later amendments are not incorporated in this text.