AdBlue®, also known as Diesel Exhaust Fluid (DEF), is used in Selective Catalytic Reduction (SCR) systems on diesel engines to reduce nitrogen oxides (NOx).

Selective Catalytic Reduction (SCR) is a technology that uses a urea-based Diesel Exhaust Fluid (DEF) and a catalytic converter to significantly reduce nitrogen oxide (NOx) emissions. This technology is widely adopted by almost all Original Equipment Manufacturers (OEMs).

The purpose of the Selective Catalytic Reduction (SCR) system is to reduce harmful nitrogen oxides (NOx) emissions from engines, which are detrimental to our health and the environment. SCR is an after-treatment technology that processes exhaust gas downstream of the engine. Small quantities of Diesel Exhaust Fluid (DEF) are injected into the exhaust upstream of a catalyst, where it vaporizes and decomposes to form ammonia (NH3) and carbon dioxide (CO2). The ammonia, in conjunction with the SCR catalyst, converts the NOx into harmless nitrogen (N2) and water (H2O).

When used in a Selective Catalytic Reduction (SCR) system, BlueDEF effectively reduces NOx emissions from engines.

AdBlue® is a high-purity solution consisting of 32.5% urea and deionized water.

Urea is a nitrogen compound that produces ammonia when its aqueous solution is heated. It is widely used in various industries, including agriculture as a fertilizer.

A 32.5% urea concentration provides the lowest freezing point for water-urea solutions. Consequently, SCR systems are calibrated to this concentration to ensure optimal NOx reduction during operation.

A 32.5% solution of DEF begins to crystallize and freeze at -11°C (12°F). Freezing does not compromise the quality of the ADBlue solution. Once thawed, AdBlue will continue to perform as required.

During vehicle operation, SCR systems are equipped with heating mechanisms for the AdBlue tank and supply lines. If AdBlue freezes when the vehicle is shut down, the startup and normal operation will not be affected. The SCR heating system swiftly returns the AdBlue to liquid form, ensuring seamless vehicle functionality.

Yes, AdBlue expands by approximately 7% when frozen. The packaging and tanks are specifically designed to accommodate this expansion.

Indeed, AdBlue must comply with the ISO 22241 quality standard.

No, AdBlue is not considered hazardous, toxic, or flammable.

AdBlue is corrosive to materials like copper, brass, aluminum, and carbon steel. Therefore, only materials approved under the ISO 22241 standards should be used in contact with AdBlue.

The Environmental Protection Agency (EPA) has mandated the reduction of nitrogen oxide (NOx) emissions released into the environment, especially under the new requirements introduced in 2010.

AdBlue is stored in a dedicated tank on the vehicle and is replenished in a manner similar to refueling.

Vehicles will feature a AdBlue gauge on the dashboard to monitor the fluid level. If the AdBlue level drops, an alert will notify the driver to replenish it. Should the AdBlue run out completely, the vehicle’s power will be reduced to prompt the operator to refill the AdBlue tank. Normal power levels will be restored once the AdBlue tank is refilled.

No, it is not an additive. It is sprayed into the exhaust stream, where it reacts with NOx in the SCR system to form nitrogen and water.

AdBlue is consumed at a rate of approximately 2-3% of the diesel fuel volume.

Yes, we provide a comprehensive range of dispensing solutions for fleets, truck stops, and all other end users.

Yes, we provide a comprehensive range of dispensing solutions for fleets, truck stops, and all other end users.