5.
The reference methods for the analysis of sulphur dioxide, of nitrogen dioxide and of oxides of nitrogen and for the sampling and analysis of lead shall be as laid down in Sections I to III of Annex IX. The reference method for the sampling and measurement of PM10 shall be as laid down in Section IV of Annex IX. The provisional reference method for the sampling and measurement of PM2,5 shall be as laid down in Section V of Annex IX. The reference techniques for air-quality modelling shall be as laid down in Section VI of Annex IX.
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Source: EUR-Lex (Cellar) · retrieved 2026-10-12 · Text as adopted (Official Journal); later amendments are not incorporated in this text.