What is AdBlue and how does it work?
AdBlue, often known as Diesel Exhaust Fluid, AUS 32 solution or ISO 22241, is a colourless, non-toxic liquid that works with selective catalytic reduction (SCR) systems in diesel engines to reduce the levels of harmful NO2 emissions that are released in your diesel engine’s fumes.
AdBlue is made of urea and de-ionised water, and contrary to its name, is not blue at all. Vehicles with EURO 4, 5 and 6 engines are unable to function without AdBlue and for companies seeking a greener status, AdBlue is ESSENTIAL.
During combustion within diesel engines, small amounts of AdBlue are injected into the flow of exhaust gasses. At these temperatures, AdBlue turns to Ammonia and CO2. Once inside the SCR Catalyst, harmful NO2 in the exhaust fumes, reacts with the ammonia and is transformed into harmless nitrogen and water, which are then emitted into the atmosphere through the vehicle’s exhaust.
Whilst AdBlue is harmless, due to its corrosive nature, it is really important to ensure that it is always stored in a suitable container to avoid any contamination or irreversible damage to machinery or vehicle engines. The shelf life of AdBlue does vary depending on storage conditions, but keeping it out of direct sunlight, and where possible, in a cool place comes highly recommended.