The test for the content of the measurement of the contaminant in pigment was based on the regular transformations in the filtering resistance characteristics.

• 依据过滤阻力特性的规律性变化与色母粒杂质含量之间的定性关系,建立了快速有效地获得色母粒杂质含量的测定方法,具有实际应用价值。