This standard has been reviewed* and then confirmed in 2009.
ISO 22241-1:2006 specifies the quality characteristics of the NOx reduction agent AUS 32 (aqueous urea solution) which is needed to operate converters with selective catalytic reduction, so-called SCR (Selective Catalytic Reduction) converters, in motor vehicles with diesel engines. SCR converters are particularly suitable for selectively reducing the nitrogen oxide (NOx) emissions of diesel engines.
Edition: 1 (Monolingual) ICS: 43.060.40 Status: Published Stage: 90.92 (2014-04-10) TC/SC: ISO/TC 22/SC 5 Number of Pages: 7
Revises: ISO/PAS 22241-1:2005