GB/T 3780.8 - 2008 is a standard specification for the determination of carbon black heating reduction. It clearly describes the measurement process for carbon black heating reduction, from sample selection, instrument preparation to heating operation and result calculation, all with detailed instructions. Heating reduction reflects the volatile matter content in carbon black and is a key indicator for evaluating carbon black mass. The standard provides a unified detection method for carbon black production, trade and use enterprises to help accurately control carbon black mass, ensure its performance is stable, meet the strict requirements of carbon black quality in various industries, and promote the standardization of carbon black industry testing work.