GB/T 3780.6 - 2007 is an important specification for the determination of Color-Strength in the carbon black standard system. It focuses on carbon black Color-Strength detection and elaborates on various points from sample preparation, instrument calibrating to test process. Through unified and standardized operation methods, the test results are guaranteed to be accurate and comparable. The standard provides key detection basis for carbon black production enterprises, Coating inks and other application industries, which helps to accurately control the mass of carbon black products, meet the needs of different scenarios for carbon black chromadizing performance, and promote the efficient and stable application of carbon black in related fields.