What is AdBlue®?

AdBlue® is a high purity non-toxic solution of Urea in demineralised water used in the exhaust systems of Euro4 or Euro5 trucks to reduce harmful emissions. AdBlue® is a trade mark owned by the VDA, most truck manufacturers use the SCR system which requires AdBlue®. To protect the SCR system the vehicle manufacturers have issued a specification standard ISO 22241 for the quality of AdBlue®. AdBlue® is stored in a separate tank on the vehicle.

It is precisely metered into the hot exhaust manifold where the urea solution breaks-down into Ammonia and reacts with exhaust gasses in the presence of a catalytic converter. The oxides of nitrogen formed at combustion are converted into harmless elementary nitrogen and water. This method is called Selective Catalytic Reduction (SCR).

It is a common misconception that AdBlue® is a fuel additive. AdBlue® solution (Urea and water) reduces harmful emissions from diesel engines using SCR technology in Passenger Cars and other forms of diesel engines. WavianBlue AdBlue® is manufactured to ISO22241 standards in the UK under VDA Licence using only the highest quality Automotive Grade Urea and de-ionised Water.