ISO 22241-1:2019 Diesel Engines NOx Reduction Agent

This document specifies the quality characteristics of the NOx reduction agent AUS 32 (aqueous urea solution) which is needed to operate selective catalytic reduction (SCR) converter systems in motor vehicles with diesel engines. SCR converter systems are particularly suitable for selectively reducing the nitrogen oxide (NOx) emissions of diesel engines. Noxguard DEF has demonstrated that it satisfies the requirements of the most recent and applicable edition of ISO 22241.