掩蔽剂 meaning in English

masking agent
masking reagent
screening agents
sequestering agent

The relationship between the absorbency and the dosages of developer , and of the masking agent has been investigated
考察了显色剂用、掩蔽剂用量及显色时间与吸光度的关系。
Research on new inhibitor of elimination of chloride ion interference in determination of chemical oxygen demand using potassiumdichromate
重铬酸钾法测定化学耗氧量消除氯离子干扰新掩蔽剂的研究