GB/T 3780.14 - 2019 is the standard for determining the sulfur content of carbon black. It stipulates the whole process from sample collection, pretreatment to sulfur content determination, covering a variety of applicable detection methods such as combustion method, detailing the operation steps, equipment requirements, and standardizing the result calculation and data processing. Sulfur content affects the performance of carbon black in rubber and other industries. This standard provides a unified measurement method for all links of the carbon black industry chain, helping to accurately control the mass, ensure that products meet industry standards, promote the standardization and standardization of carbon black industry testing work, and improve product mass Stability.