rec_23
(23) The correct functioning of the after-treatment system, and more specifically in the case of NO_(x), is the basic requirement for fulfilling the established standards for pollutant emissions. In this context, measures to guarantee the proper operation of systems relying on the use of a reagent should be introduced.
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Source: EUR-Lex (Cellar) · retrieved 2026-11-01 · Text as adopted (Official Journal); later amendments are not incorporated in this text.