... 40min, 45min, 50min, 55min, 60min (optional) 3. Applicable StandardThis instrument conforms to the standard of GB/T 387, ASTM D1551 ... . 4. ScopeThis instrument applies to the dark petroleum products that have sulfur content above 0.1% (m/m), ... petroleum coke, paraffin and sulfuric additives. 5. Structural CharacteristicsThis instrument is controlled by the single chip, and is capable of ...