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Description of BS EN ISO 20884:2019 2019This document specifies a wavelength-dispersive X-ray fluorescence (WDXRF) test method for the determination of the sulfur content of liquid, homogeneous automotive fuels from 5Â mg/kg to 500Â mg/kg, which have a maximum oxygen content of 3,7Â %Â (m/m). This product range covers:
Products with higher oxygen content show significant matrix effects, e.g. pure FAME used as biodiesel, nevertheless, pure FAME can be analysed when the corresponding procedures are followed (see 5.3 and 8.1). Other products can be analysed with this test method, though precision data for products other than those mentioned have not been established for this document. NOTE 1 Sulfur contents higher than 500 mg/kg can be determined after sample dilution, however, the precision was not established for diluted samples. NOTE 2 For the purposes of this document, “% ( m/m)� and “% ( V/V)� are used to represent the mass fraction, w, and the volume fraction, φ, of a material respectively.
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