Why diesel exhaust fluid needs a dedicated container, and what it must and must not touch.
Diesel exhaust fluid is a precision consumable, not a fuel. It is a 32.5% urea solution to ISO 22241, sold as AdBlue, and it is ruined by contamination. The container matters as much as the fluid.
DEF is dosed into a vehicle's exhaust to cut NOx, and the dosing system is sensitive to contamination. A trace of the wrong metal or a residue of fuel can put a vehicle into a fault state. A DEF container is defined by what it must not contain as much as what it holds.
DEF is compatible with HDPE, polypropylene and certain stainless steels (304 and 316). It is corroded or contaminated by carbon steel, zinc, copper, brass and aluminium. That rules out a galvanized steel fuel can, and it rules out a brass tap or fitting. A DEF container is HDPE or stainless throughout, with no incompatible metal in the wetted path.
DEF has a working temperature window. It freezes at about minus 11 degrees Celsius, and prolonged storage above roughly 30 degrees shortens its shelf life. Keep it sealed, out of direct sun, and within the range in the ISO 22241 handling guidance.
Use dedicated dispensing equipment for DEF, never a spout or pump shared with fuel or another chemical. Cross-contamination from a shared fitting is a common cause of a ruined tank of fluid.
Our DEF can is built for AUS 32 urea solution, in a compatible material with a compatible closure. Do not substitute a steel fuel can or a brass-tapped dispenser. Send us your volumes and we specify the right container and fittings.
Tell us your market, your fuel and your volumes. We come back with a specification sheet and a quotation.