ENVIRONMENTAL & SAFETY SOLUTIONS GREENSAFE AUSTRALIA ABN 221 479 379 24  P.O. Box 4186 Keilor Downs   Victoria   3038 MOBILE: 0422 369 888  
About ClearBlue-DEF   (Aqueous Urea Solution 32.5%) What is ClearBlue-DEF   and Why Is It Needed? ClearBlue-DEF   is an aqueous urea solution manufactured by Greensafe Australia Pty Ltd for use in vehicles fitted with SCR technology. ClearBlue-DEF    is a clear and colourless solution made from urea and water.  The solution is non-toxic and safe to handle.  Only high purity urea and ultrapure water are used to manufacture the ClearBlue-DEF   solution which ensures that ClearBlue-DEF  is free from contamination and meets the international quality standard for SCR-DEF solutions, ISO 22241-1. How Does It Work - The Process What is SCR? Selective catalytic reduction is a process that most heavy duty vehicle manufacturers have adopted to reduce nitrous oxide (NOx) emission from the exhaust of diesel engine vehicles.  This technology was introduced to meet tough new emissions standards in Europe which are called Euro 5 and Euro 6.   Australian emission standards for heavy vehicles are based on European regulations and the Euro 5 standard was mandated in Australia in January 2011.    How does it work? ClearBlue-DEF  , stored in a separate tank located beside the diesel tank which has a distinctive blue lid (Figure 1), is injected into the exhaust gases before they pass through an SCR catalytic converter.  It is here that the ClearBlue-DEF    solution decomposes into ammonia (NH3) and carbon dioxide (CO2).  In the catalytic converter the nitrogen oxides (NOx) in the diesel emissions are converted to harmless nitrogen (N2) and water (H2O) when mixed with the ammonia (NH3). See Figure 2. ClearBlue-DEF    is dosed into the SCR system at a rate equivalent to 3-5% of the diesel consumption. Manufacturing and Quality Control The Greensafe Way ClearBlue-DEF   is manufactured and tested by qualified industrial chemists whose combined experience totals 30 years.  Each batch of ClearBlue-DEF    is tested using a refractometer specifically designed to measure the aqueous urea solution (Figure 3). This ensures that each batch meets the ISO 22241-1 requirement of 32.5±0.7% urea.  
Figure 2 – Schematic of SCR technology and main chemical reactions. Figure 1 – Picture of SCR-DEF solution tank and distinctive blue lid visible.
Environmental & Safety Solutions
        Greensafe Australia Pty. Ltd.      ABN 221 479 379 24      P.O. Box 4186, Keilor Downs, Victoria 3038      info@greensafeaustralia.com.au             Web Site by VP-IT
Manufacturers of
Selective Catalytic Reduction - Diesel Emissions Fluid (SCR-DEF)
Figure 3 - Urea concentration refractometer
ClearBlue-DEF ™
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