Ad Blue

WHAT IS ADBLUE® ?

AdBlue® (Diesel Exhaust Fluid) is a 32.5% solution of urea in deionised water and is required by many commercial vehicles operating on Europe's roads. AdBlue® (Diesel Exhaust Fluid)is essential for the correct operation of an advanced pollution control technology installed in the exhaust system called Selective Catalytic Reduction or SCR. Unlike diesel, AdBlue® is a clear, non-toxic liquid that is safe to handle and does not damage the environment. AdBlue® is not a fuel or fuel additive

Non Toxic & Non Hazardous.

Non Flammable.

Compatible with all diesel SCR systems.

Reduces SCR component wear.

Do not mix with water.

Meets OEM specifications.

Extends SCR catalyst life.

WHO NEEDS ADBLUE® ?

Currently, AdBlue® is required by the majority of heavy duty diesel vehicles (trucks, buses and coaches) purchased after October 2006.

In order to meet the Euro IV and V emissions limits, all of the major European truck makers, to greater or lesser extent, offer SCR equipped vehicles. However, MAN and Scania have a firm focus on an alternative technology called EGR that does not require the use of AdBlue® and have equipped the majority of their model ranges accordingly.

It is important to ensure that the vehicles remain supplied with AdBlue®, as an on-board policing system will enforce a torque penalty if the AdBlue® tank is empty. This is to ensure that the vehicles NOx emissions remain below the legal limit.

CHARACTERISTICS	UNIT	LIMITS		TEST METHODS
		MIN	MAX
Urea Contenta	% (m/m)d	31.8	33.2	ISO 22241-2 Annex B e ISO 22241-2Annex Ce
Density at 20 aC b	kg/m3	1 087.0	1 093.0	ISO 3675 or ISO 12185
Refractive index at 20 aCc	-	1,381 4	1,384 3	ISO 22241-2 Annex C
Alkalinity as NH3	% (m/m)d	-	0.2	ISO 22241-2 Annex D
Biurret	% (m/m)d	-	0.3	ISO 22241-2 Annex E
Aldehydes	mg/kg	-	5	ISO 22241-2 Annex F
Insoluble Matter	mg/kg	-	20	ISO 22241-2 Annex G
Phosphate (PO4)	mg/kg	-	0.5	ISO 22241-2 Annex H
Calcium	mg/kg	-	0.5	ISO 22241-2 Annex I
Iron	mg/kg	-	0.5
Copper	mg/kg	-	0.2
Zinc	mg/kg	-	0.2
Chromium	mg/kg	-	0.2
Nickel	mg/kg	-	0.2
Aluminium	mg/kg	-	0.5
Mangnesium	mg/kg	-	0.5
Sodium	mg/kg	-	0.5
Potassium	mg/kg	-	0.5
Identity	-	Identical To Reference		ISO 22241-2 Annex J

It is essential that the purity of AdBlue® is ensured throughout the supply chain and when stored at a home depot. Therefore, it is critical that AdBlue® is transported and stored in a manner that conforms to the CEFIC guidelines. When stored at a home depot, it is important that the AdBlue® is not decanted from IBCs or bulk containers into smaller canisters as SCR catalysts are sensitive to many contaminants - especially mineral ions - and can suffer irreversible damage. If the damage has resulted from mishandling of AdBlue®, the vehicle's warranty is likely to be found invalid.

To some extent AdBlue® is sensitive to extreme temperatures, both hot and cold. The solution will freeze if its temperature falls below -11°C, and the urea content can decrease if stored at temperatures in excess of 30°C. However, AdBlue® is not harmed by the freezing process and once thawed will retain its concentration and quality. In areas where the temperature is frequently in excess of 30°C (Greece, Spain etc.) it is necessary to ensure that the solution is not stored in direct sunlight.

The trucks themselves, and larger equipment installations, are built with several heated components to minimise the problem of frozen AdBlue®.

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