Diesel Exhaust Fluid, otherwise known as DEF can reduce Nitric Oxides in emissions by 85%

DEF from ANN Group needs to be used after ensuring that the ignition is switched OFF while filling the DEF. Always close the DEF tank's cap tightly till you hear the clicking sound. Clean the DEF tank's cap and surrounding area before opening. Take care not to fill DEF in Diesel Tank, accidently. Take care not to fill Diesel in DEF Tank, accidently. DEF freezes at -11°C. Use DEF within 12 months of purchase or 15 months of manufacturing. Don't wait till the DEF tank gets fully depleted. Fill DEF at regular intervals.

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Diesel engines can be run with a lean burn air-to-fuel ratio (overstoichiometric ratio), to ensure the full combustion of soot and to prevent their exhausting unburnt fuel. The excess air necessarily leads to generation of NO , which are harmful pollutants, from the nitrogen in the air. SCR is used to reduce the amount of NO released into the atmosphere. DEF from a separate tank is injected into the exhaust pipeline. Within the SCR catalyst, the NO are reduced by the ammonia into water and nitrogen, which are both non-polluting. The water and nitrogen are then released into the atmosphere through the exhaust.

The injection rate of DEF into the exhaust depends on the specific after-treatment system, but is typically 2–6% of diesel consumption volume. This low dosing rate ensures long fluid refill intervals and minimizes the tank's size (and intrusion into vehicle packaging space). An electronic control unit adjusts the addition of fluid in accordance with such parameters as engine operating temperature and speed.

Diesel Exhaust Fluid, otherwise known as DEF can reduce Nitric Oxides in emissions by 85%. And also DEF meets all BS6, BS4 objectives for cleaner emissions.

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The urea solution is clear, non-toxic and safe to handle. Since urea has corrosive impact on metals like aluminium, DEF is stored and transported in special containers. These containers are typically made of stainless steel. Vehicles' selective catalytic reduction (SCR) systems and DEF dispensers are designed in a manner that there is no corrosive impact of urea on them.

DEF be stored in a cool, dry, and well-ventilated area that is out of direct sunlight. Bulk volumes of DEF are compatible for storage within polyethylene containers (HDPE, XLPE), fiberglass reinforced plastic (FRP), and steel tanks. DEF is also often handled in intermediate bulk containers for storage and shipping.