Rubber compounding ingredients. Carbon black. Determination of sulfur content shop-only operating division

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Rubber compounding ingredients. Carbon black. Determination of sulfur content shop-only operating division1 Scope This International Standard specifies three methods for the determination of the total sulfur in all types of carbon black for use in the rubber industry: Method A, using an oxygen bomb calorimeter; Method B, using a combustion furnace; Method C, using an automatic analyser. With respect to safety aspects and test precision, it is preferable to use automatic systems. Classical chemical analysis (Method A and Method B) is acceptable if