Our bulk DEF is a mixture of 32.5% high purity synthetic urea and 67.5% deionized water that is used in Selective Catalytic Reduction (SCR) systems on diesel engines.  DEF is the primary ingredient used to help convert NOx to harmless nitrogen and water.

DEF is stable, colorless, non-flammable, non-toxic and is classified as minimum risk for transportation.     DEF conforms to the ISO-22241-1 specification for DEF, is API registered and meets or exceeds OEM specifications.

Allow Max Arnold & Sons, LLC, to be your supplier for DEF. Available in convenient 2 and1/2 gallon jugs, 55 gallon drums, and 330 gallon totes.  Each of our Bulkplants stocks DEF to meet all of your needs.  For more information call one of our Bulkplant offices, or one of our Oil Specialist Sales Representatives.