What is AdBlue®?

What is AdBlue®?                                                                                                                                                                

AdBlue® is the registered trademark of the Verband der Automobilindustrie (VDA) for high purity aqueous urea solution (32.5%) for use in selective catalytic reduction systems (SCR) to reduce emissions from Diesel Vehicles.

The AdBlue® is stored in a separate tank on the vehicle and from there is dosed automatically into the exhaust gas, as required to the amount of Nitrous Oxides (NOx) being produced by the engine


Following the dosing, the exhaust gas and AdBlue® mixture passes through the SCR system where a chemical reaction takes place, converting the harmful NOx to harmless nitrogen and water which is dispersed from the end of the exhaust

AdBlue® is non-toxic and safe to handle. It is not a fuel or a fuel additive and should only be used in the dedicated tank in your vehicle. It is refilled in a similar way to refuelling diesel.

SCR technology is being adopted by most large scale car manufacturers for new diesel engine vehicles and is becoming more widely available in petrol stations and by oil suppliers.

Why is AdBlue® Quality Important?

All manufacturers of vehicles and machines insist that only urea solutions produced to ISO 22241 standards should be used with the SCR system.

The AdBlue® trademark is owned by the Verband der Automobilindustrie (VDA), who insure that the correct standards and quality are maintained in accordance with ISO 22241 Specification.

Using uncertified urea solutions can expose you and your vehicles to un-necessary risk.  If the quality is not to standard you run the risk of the presence of certain elements and compounds which can block the active sites on the Catalyst. These blockages can reduce the efficiency of the system, ultimately causing pollutants to rise, and potentially damage to the SCR exhaust system and warranty of your vehicle.

By choosing EuroBlue AdBlue® you are guaranteed the highest quality AdBlue® on the market, produced to ISO 22241 Standard and independently tested prior to release

How much AdBlue® do I need?

Average consumption of AdBlue® in Heavy Goods Vehicles and Buses is approximately 5% of diesel use.

Average consumption in cars and light vehicles is approximately 1 litre of AdBlue® for every 1000 Kilometre driven.

These are just average consumption guidelines and the actual use will depend on the make and model of the vehicle and the driving style. The amount of AdBlue consumed is directly proportional to the amount of diesel used, so driving more economically will consume less AdBlue along with less diesel.

AdBlue® Characteristics


Appearance:                      Clear odourless liquid.

Shelf Life:                           Recommended shelf life is 12 months

Freezing Point:                 – 11oC

Handing:                             Corrosive to Iron, copper, bronze and some aluminium alloys

                                                Store only in AdBlue® approved containers and tanks

Storage:               Recommended storage is out of direct sunlight and avoid extreme temperature fluctuations.


In case of skin or eye contact rinse with plenty of Water

All vehicles are equipped with a warning signal when your AdBlue tank is running low and will advise you to fill up as soon as possible. Because the rate of use of AdBlue is much less that diesel, there should be plenty of time to find a supplier of AdBlue. However, if the AdBlue tank becomes empty, the vehicle will be unable to start and roadside assistance will be required.