NREL advances on B20 biodiesel quality testing

In Colorado, the National Renewable Energy Laboratory has conducted its first B20 quality survey conducted in which the samples were held against ASTM D7467, the B6 to B20 blend specifications and with good results. Samples were taken from retail outlets during the December 2009/January 2010 timeframe, and 75% of them were obtained from regions NREL deems as colder, while the remaining fraction were taken from warmer regions. Tests for accurate biodiesel content in the samples showed 95% were blends of B20 or below, and 76% were between B6 and B20. Only one sample displayed greater biodiesel content than 20%.

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