PURUS® Diesel Exhaust Fluid (DEF) is a non-toxic, clear, chemical, urea solution for use as a reducing agent for SCR systems (Selective Catalytic Reduction) in diesel-powered vehicles. NOx exhaust
emissions are reduced to the following components of air, nitrogen, water and carbon dioxide, thereby removing pollutants from further entering the atmosphere.

PURUS® DEF meets all EPA standards and bears the American Petroleum Institute’s API symbol. This symbol guarantees PURUS™ Diesel Exhaust Fluid is certified and ensures the standards of product manufacturing, handling and packaging, quality assurance, and safety/environmental protection.