Diesel Emissions Fluid Testing
Diesel Emissions Fluid (DEF, AdBlue, Diesel Exhaust Fluid) quality control testing, per ISO 22241-1.
Intertek test Diesel Emissions Fluids (DEF) for quality specifications and potential contamination in Europe and North America. Often referred to as AdBlue® testing in European and other markets, DEF is required by many modern diesel engine applications using selective catalytic reduction (SCR) technology to reduce oxides of nitrogen exhaust.
SCR systems are an integral part of the engine powertrain configuration, and contaminants or impurities in the Adblue or DEF could cause the SCR system to malfunction or fail. Thus, it is important to maintain appropriate DEF quality standards as characterized in the ISO 22241-1 standard.
DEF Analysis:
- Diesel Exhaust Fluid quality control testing per ISO 22241-1
- Intertek is an API recommended Analytical Supplier
- Full Slate ISO 22241-1 analysis required for API licensing and certification
ISO 22241-1 DEF (Adblue®) test methods:
ISO 22241-2 Annex B/C Urea Content
ISO 12185 Density at 20C
ISO 22241-2 Annex C Refractive Index at 20C
ISO 22241-2 Annex D Alkalinity as NH3
ISO 22241-2 Annex E Biuret content
ISO 22241-2 Annex F Aldehydes content
ISO 22241-2 Annex G Insoluble Matter content
ISO 22241-2 Annex H Phosphate (PO4)
ISO 22241-2 Annex I Ca, Fe, Cu, Zn, Cr, Ni, Al, Mg, Na, K
ISO 22241-2 Annex J Identity (FTIR)
Diesel fuel testing:
Contact us to see how Intertek can help your organization with Diesel Emissions Fluid Testing.



