preamble_144
Council Directive 85/203/EEC of 7 March 1985 on air quality standards for nitrogen dioxide · European Union
8. Sampling at the sampling head should not be influenced by adjoining installations (the air-conditioning or data transmission equipment).
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Source: EUR-Lex (Cellar) · retrieved 2026-11-10 · Text as adopted (Official Journal); later amendments are not incorporated in this text.