What is full form of DEF?\nDiesel Exhaust Fluid (DEF) - Reduced emissions - Land Rover\nDiesel Exhaust Fluid (DEF) also known as AdBlue®, is a non-toxic, colourless, odourless and non-flammable fluid. Stored in a dedicated tank in your car, it is injected into the exhaust system to clean exhaust gases.\nWhat should DEF quality be?\nThe concentration of the DEF must be 32.5% urea (+/- 0.7%). The DEF concentration should be checked when; the vehicle has been stored for an extended period of time, it is suspected that water has been added to the DEF tank, or the warning light appears on dashboard.\nWhat is the ISO standard for DEF?\nThe production, handling, and transportation of Ocean Blue Diesel Exhaust Fluid (DEF) are governed by the ISO 22241 standard.\n\nSpecifications: Packaging Size: 1000 L; Packaging Type: Tank; Purity: 32.50%; Usage/Application: Automotive; Brand: BioKemikel; Country of Origin: Made in India.