ASTM D473 test method for sediment in crude oils and fuel oils
ASTM D473 standard test method for sediment in crude oils and fuel oils by the extraction method
3. Summary of Test Method
3.1 Extract test portion of a representative oil sample, contained in a refractory thimble, with hot toluene until the residue reaches constant mass. The mass of residue, calculated as a percentage, is reported as sediment by extraction.
4. Significance and Use
4.1 A knowledge of the sediment content of crude oils and fuel oils is important both to the operation of refining and the buying or selling of these commodities.
