ASTM-D7591 › Standard Test Method for Determination of Free and Total Glycerin in Biodiesel Blends by Anion Exchange Chromatography
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1.1 This test method covers and describes an anion exchange chromatography procedure for determining free and total glycerin content of biodiesel (B100) and blends (B0 to B20) with diesel fuel oils defined by Specification Grades 1-D, 2-D, and low sulfur 1-D and 2-D and Specification (for B100 feedstocks). It is intended for the analysis of biodiesel and blend samples containing between 0.5 mg/kg to 50 mg/kg glycerin.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
biodiesel blends; free glycerin; glycerin; ion chromatography; total glycerin;; ICS Number Code 75.160.20 (Liquid fuels)
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2012 R17 EDITION
July 1, 2017