This International Standard specifies a method for the determination of the ash at 850-900 C “and a method for the determination of residue at 200 C “of sulphur for industrial .useThe methods specified are applicable to sulphur for industrial use containing at least 98 %of elemental sulphur S expressed as a percentage by mass of the dry ,product .i.eof the product dried at 80 C “for 2 .hNOTE -The differente between the ash at 850-900 C “and the residue at 200 ,OCexpressed as percentages by mass of the dry ,productcorresponds to the non-volatile “bituminous ”mattercontent at 200 O -C