Techniques for identifying the quality of biological reagents

There are many kinds of biological reagents, in the face of a variety of product markets, how do we distinguish the quality of it?

1. Experimental pure (LR, yellow label) : the main component content is high, the purity is poor, the impurity content does not make the choice, only suitable for general chemical experiments and synthetic preparation.

2. Equivalent reagent (3N, 4N, 5N) : principal component content of 99.9%, 99.99%, 99.999% or more.

3. Indicator and stain (ID or SR, purple label) : special sensitivity is required.

4. Spectral purity: the purity of main components is 99.99%

5. Quality level: excellent pure (GR, green label) : the main component content is very high, high purity, suitable for accurate analysis and research work, some can be used as a reference material.

6. Analysis of pure (AR, red label) : the main component content is very high, high purity, interference impurity is very low, suitable for industrial analysis and chemical experiments. Equivalent to foreign ACS level (American Chemical Society standard)

7. Grade (ZD) : biological reagents customized for specific users according to the quality control indicators required by users.

8. Chemical pure (CP, blue label) : the main component content is high, high purity, there are interference impurities, suitable for chemical experiments and synthesis preparation.

9. Electronic pure (MOS) : suitable for the production of electronic products, electrical impurity content is very low.