Air1® is Yara's Diesel Exhaust Fluid used in vehicles with Selective Catalytic Reduction (SCR) technology to reduce harmful gases to meet EPA clean air standards. The SCR system makes the vehicle more fuel efficient, and release less pollution into the air.

Find your local Air1 supplier

With locations across the US, you are never far away from an Air1 North American distributor.

Find your nearest DEF filling station on our locator map or download our free app:

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Air1 Diesel Exhaust Fluid is:

• Non toxic
• Non hazardous
• A high-purity urea solution
• Safe and easy to use

Packaging sizes

Air1 DEF is available in:

• 1 gallon jugs
• 2.5 gallon jugs
• 55 gallon drums
• 330 gallon totes
• Bulk

Storage solutions

For fleet owners, gas stations and retailers we can also give you advice on and supply suitable storage solutions to fit your needs, including the installation of DEF tanks. We can help with:

• Engineering and site assessment for independent resellers or for distribution networks
• Finance options

Diesel Exhaust Fluid supply reliability

Air1 has been a brand of Yara and a pioneer of DEF on the North American market since 2010. It was first introduced in Europe in 2005. Yara produces Air1 in 5 plants, bringing the world's largest DEF capacity in the world to the North American market.

DEF high quality product

At Air1, we focus on making sure that you receive DEF that avoids all impurities. Yara's Air1 comes from virgin pure urea and is specially treated demineralized water.
To be sure that you receive the purest quality we maintain the highest standards through the whole supply system. Air1 gets to you via dedicated ships, road tankers and railcars to dedicated terminals. We make sure we analyze each batch produced in our plant.

See how DEF reduces exhaust emissions, how it is made and why you need to choose a quality product to protect your engine. Learn more about DEF.