30.99 Jun 18, 2026
ISO
ISO/TC 47
International Standard
This international standard specifies wavelength dispersive X-ray fluorescence spectrometry (WD-XRF) for the chemical analysis of selective catalytic NOx reduction(SCR) catalysts and intermediates.
This standard is applicable to the determination of titanium (Ti), vanadium (V), tungsten (W), Molybdenum (Mo), phosphorus (P), silicon (Si), aluminum (Al) in SCR catalyst for flue gas denitration.
IN_DEVELOPMENT
ISO/CD 25515
30.99
CD approved for registration as DIS
Jun 18, 2026