DEF Fluid

As worldwide regulations for nitrogen oxide (NOx) emissions become stricter, a growing number of countries are beginning to make Diesel Exhaust Fluid mandatory for new diesel engines, including light and heavy-duty trucks, off-road agricultural and industrial equipment, and even new passenger cars.

DEF is a special urea solution that is used as a reducing agent in SCR (Selective Catalytic Reduction) technology. DEF is a high-purity 32.5% aqueous urea (ammonia) and 67.5% de-ionized water for specific use in SCR systems.
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Diesel-powered vehicles with an SCR catalytic converter and an additional separate tank for DEF can convert their output of nitrogen oxides into neutral nitrogen and water, thus achieving a considerable reduction of their NOx emissions. We are the largest worldwide distributor of Diesel Exhaust Fluid.