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FAQ
FREQUENTLY ASKED QUESTIONS ABOUT Blue Sky Eco AdBlue®
Q What is AdBlue® ?

AdBlue® is the reagent to be used in Selective Catalytic Reduction (SCR) systems on heavy commercial vehicles using diesel as the power source.

Q Who is VDA

VDA stands for Verband der Autmobilindustrie. It is German organisation charged with the responsibility of protecting and furthering the reputation of the AdBlue® Trademark.

Blue Sky Eco is approved as a licensee to market AdBlue® product globally

Q What is AdBlue® for?

SCR Systems work in concert with the urea based solution, AdBlue®, to dramatically reduce the level of Nitric Oxide emissions from these engines

Q What is SCR?

SCR is a catalyst installed in the exhaust system of the truck, bus or coach which needs AdBlue® sprayed into it at the same time the exhaust fumes are being exhausted from the engine. This converts and reduces NOx (oxides of nitrogen) to harmless nitrogen and water which is then emitted from the vehicle exhaust.

Q What is AdBlue® made of?

AdBlue® is a high purity, 32.5% strength urea solution

Q Does it need to meet any Quality Standards?

Yes, it needs to meet the DIN70070 quality standard and the AUS 32 standard contained in ISO standard 22241-1,22241- 2 and 22241-3

Q Why does AdBlue®® have to be so pure and meet the DIN standard?

Product which doesn't have this quality assurance could carry contaminants which will seriously damage the catalyst on your vehicle and breach the conditions of your warranty.

Q Is it hazardous?

AdBlue® is non-hazardous.

Q What has changed to make AdBlue® necessary?

European legislation states that from October 2006 commercial vehicles are only allowed to emit a certain limit of noxious fumes and this legislation is to be called Euro IV, Euro 5 and now Euro 6.

Q What is the new emission limit?

To meet Euro IV legislation the amount of NO x emitted from the truck, bus or coach exhaust cannot be above 2g/kwhr (2 grams per kilo watt hour). The emissions targets for Euro-6 have been agreed by the European Parliament (EP) and the European Commission (EC). Compared with Euro-5 levels, the targets represent an 80% reduction in NOx and a 66% cut in particulate matter.

Q Where will AdBlue® be used?

AdBlue® is to be used on trucks and buses which are Euro IV,EuroV and Euro VI compliant by being fitted with SCR technology.

Q How will AdBlue® be carried on the vehicle?

AdBlue® is stored in its own tank on the vehicle. This is replenished with a specialised nozzle that will fit only the specially designed 19 mm orifice in AdBlue® Tank. It is designed this way so that diesel is not mistakenly added to the AdBlue® tank as a diesel nozzle is too big to enter this orifice.

Q How does the AdBlue® mix with emission streams?

SCR vehicles have a sensor fitted to the internal surface of the exhaust pipe in heavy duty diesel trucks. This sensor measures the level of Nitric Oxide and activates software that automatically administers the correct amount of AdBlue® urea solution .The AdBlue® is sprayed into the exhaust gas flow where it is subsequently hydrogenated into ammonia before the catalytic convertor effects the breakdown of Nitric Oxide (NO x) into Nitrogen (N2) and water (H2O).

Q How much AdBlue® will be required?

The rate of AdBlue® usage is approximately 5% by volume to the rate of diesel consumption, therefore you will use about 5 litres of AdBlue® to every 80-100 litres of diesel (depending on engine design).

Q When and how is AdBlue® available?

AdBlue® is available now. You can refill your vehicle with AdBlue® from storage on your own site which we can supply as follows:
  • IBC - (Intermediate Bulk Container) this holds 1000 litres of AdBlue® We can supply a dispenser pump to conveniently deliver the product into your vehicle.

  • Mini Bulk and Bulk - tanks with built in dispense pump can be supplied for storage volumes of 1500 litres upwards.

  • 15 Litre containers for emergency use.

Q Who is the manufacturer of AdBlue®?

AdBlue® is manufactured by a number of companies. Blue Sky Eco is now a supplier of AdBlue® offering security of supply nationally.

Q How much will AdBlue® cost?

The price per litre will depend upon the delivery method and quantity, but will be less than the cost of diesel per km travelled. However, because AdBlue® means lower emissions, engines can be tuned to offer better fuel consumption and therefore lower vehicle running costs are expected.

Q Can SCR be retro-fitted to existing fleets?

There are a number of technology providers who do offer this possibility. This can be of particular benefit to the bus sector who need to achieve emission limits set by local authority policy.


Q Can I make my own AdBlue®?

No. AdBlue® is a high purity chemical solution manufactured to a strict specification and distributed through a secure supply chain. It is highly unadvisable to attempt to create your own 32.5% urea solution from fertilizer grade urea and water—purified or otherwise.

Remember - using a non DIN/ISO specification urea solution will probably result in catalyst damage, invalidating the vehicle’s warranty!