Gives a method for the determination of the ash, in the range 0.01& to 0.20% from distillate and residual fuel oils, crude oils, lubricating oils, waxes and other petroleum products in which any ash forming materials present are considered to be undesirable impurities or contaminants. Limited to petroleum products which are free from added ash forming additives. Covers brief history, summary of method, apparatus, procedure, calculation, test report and precision.

NF EN ISO 6245:2002

BS 4450:1976 - Identical