Why ASTM D2622 cannot be used for sulfur content in B100
According to the European Committee for Standardization (EN), both ultraviolet fluorescence (ISO 20846, sulfur by UVF) and wavelength dispersive x-ray fluorescence (ISO 20884, sulfur by WDXRF) are applicable test methods for fatty acid methyl ester (FAME), also known as biodiesel (EN 14214), and both are listed as referee methods. However, the situation is different at ASTM International (formerly the American Society for Testing and Materials).