The SCR process requires AdBlue® as a reducing agent. AdBlue® from WEG is an extremely pure 32.5% urea solution. It is a liquid DEF, absolutely safe and environmentally friendly. Its specifications, process and production means are certified by VDA. During the SCR process, this high-quality solution reduces the level of pollutants in the exhaust gases of passenger and commercial diesel-powered vehicles by up to 90%.