This method is for determining total sulfur in petroleumproducts and other organic/inorganic materials, such as catalysts,using a LECO Sulfur Analyzer. The detection range is from 100% downto a lower limit of 0.01 mass-% sulfur. Nitrogen and halogens donot interfere unless they are present in concentrations ten timeshigher than that of the sulfur. The method is generally limited tosamples having initial boiling points above 200 C. However, it canbe applied to some wider boiling rage samples, such as crude oils,where experience has shown that no losses occur during thecombustion process.