Common quality levels of chemical reagents

Premium grade pure (GR, green label): The content of the main ingredient is high and the purity is very high. It is suitable for accurate analysis and research work, and some can be used as a reference substance.

Analytical purity (AR, red label): The content of the main components is high, the purity is high, and the interference impurities are very low. It is suitable for industrial analysis and chemical experiments. Equivalent to foreign ACS level (American Chemical Society Standard)

Chemically pure (CP, blue label): high content of main components, high purity, presence of interfering impurities, suitable for chemical experiments and synthetic preparation.

Experimental purity (LR, yellow label): The main ingredient content is high, the purity is poor, the impurity content is not selected, only suitable for general chemical experiments and synthetic preparation.

Indicators and stains (ID or SR, purple label): require unique sensitivity.

Specified level (ZD): Chemical reagents customized for specific users according to the quality control indicators required by users.

Electronic pure (MOS): suitable for the production of electronic products, the content of electrical impurities is extremely low.

Equivalent reagents (3N, 4N, 5N): The main component content is 99.9%, 99.99%, and 99.999% respectively.

Spectral purity: The main component purity is 99.99%

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