RELIABILITY • CONVENIENCE • QUALITY

Fleet operator’s
most reliable
Diesel Exhaust Fluid

AMERICA RELIES ON YOU. YOU CAN RELY ON US.

American communities are powered by companies like yours — businesses run by reliable, honest, hardworking people who deliver on time, every time. That’s why you deserve a reliable source of DEF when you need it, where you need it.

Product description

UltraDEF™ Diesel Exhaust Fluid is used in Selective Catalytic Reduction (SCR) systems in diesel vehicles to help convert harmful NOx to nitrogen and water. UltraDEF™ is high-purity synthetic urea mixed with deionized water.

Made in the USA

Specifications:

  • ISO-22241

  • Meets OEM standards

  • Compatible with all diesel SCR systems

  • American Petroleum Institute (API) certified

  • Non-flammable formula for safe handling

Available units

  • 2.5 GALLON JUG

  • 5 GALLON CASE

  • 55 GALLON DRUM

  • 275 & 330 GALLON IBCs

  • LESS THAN TRUCKLOAD & FULL TRUCKLOAD BULK

  • Convenience

    UltraDEF™ is made in Roanoke, Virginia in a state-of-the-art facility built in 2024. We are conveniently located to serve customers across the South East and Mid-Atlantic.

  • Reliability

    We produce DEF in the market to serve users of all sizes. From independent logistics operators to national transport operators, we have a supply solution to serve your needs.

  • Quality

    UltraDEF™ is high-quality diesel exhaust fluid certified by the American Petroleum Institute. We stand by our product and use it to operate our own fleet.

Get in touch

Give us a call at 1-800-523-3099, email our team at customerservice@chemsolv.com or click the button below.