DEF purity is essential because contaminants such as dust, water, or hydrocarbons can damage SCR catalysts and reduce nitrogen oxide reduction efficiency. Urea dispensers are designed to maintain DEF purity with sealed systems and high-quality filtration.
All fluid-contact materials are DEF-compatible, and the dispensing system prevents cross-contamination from diesel or other fuels. Regular inspection and maintenance further ensure that only clean DEF is delivered to vehicles.
Maintaining purity protects SCR systems, ensures compliance with emission regulations, reduces maintenance costs, and extends vehicle component life. High-quality DEF delivery is a core function of a reliable urea dispenser.