Chemicals reagents are commonly referred to simply as reagents. Chemicals reagents are a large class of pure chemical substances with various standards of purity and can be used for the synthesis, separation, qualitative and quantitative analysis of substances. They can be said to be the eyes of chemical workers. Chemical reagents are indispensable in all kinds of industries, such as industry, agriculture, medical and health, life sciences, inspection and quarantine, environmental protection, energy development, national defense, military industry and scientific research. https://www.alfachemic.com/testinglab/industries/chemical-reagent.html