For drivers in need of diesel exhaust fluid (DEF), Yara has a solution. The new Air1 DEF Mobile Locator uses GPS to identify the nearest DEF retail outlets to a driver’s location.

The app is available for free from the iTunes app store for the iPhone, iTouch, and iPad. An app for Android devices will be released in August and a Windows 7 version in September, Yara said.

Yara is a global producer of DEF, selling the product under the name Air1 in the U.S. DEF is required to ensure vehicles running with selective catalytic reduction technology remain compliant with EPA’s 2010 heavy-duty engine and vehicle emissions standards.

“Currently, more than 35% of drivers own smartphones and approximately two thirds of those drivers are downloading apps,” said Chad Dombroski, Yara’s director of Air1. “The Air1 DEF Mobile Locator was developed as a tool to help save drivers’ time and make their lives a little easier by allowing them to quickly find out where they can refill their tanks with quality DEF while on the road.”

The app will locate any of over 600 retail outlets selling DEF in the U.S. Drivers can search by city, state, or zip code and the application will calculate the distance and provide directions to the outlet.

To download the app for free, visit the Air1 website or the iTunes app store.