DIN 51400-1
DIN 51400-1 Testing of mineral oils and fuels - Determination of sulfur content (total sulfur) - Part 1: General working principles
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 04/01/2009
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 04/01/2009