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What is the difference between electronic grade and analytically pure chemicals?---Nanjing Binglab

Views: 0     Author: Site Editor     Publish Time: 2023-08-11      Origin: Site

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What is the difference between electronic grade and analytically pure chemicals?---Nanjing Binglab

Guaranteed reagent(GR) is the purity specification of chemical reagents, which belongs to the first-class product, and the label is dark green.


Analytical purity, chemical purity, and guaranteed reagent all refer to the purity level of the reagent. The difference is that:

  1. In terms of purity: chemical purity<analytical purity<excellent grade, the purity of superior grade is the highest, which can reach more than 99.8%;

  2. Application: chemically pure is used for general chemical experiments; analytically pure is used for analytical experiments; Guaranteed reagent is higher and can be used for impurity analysis tests;

  3. In terms of cost and selling price: it is determined by the level of purity, the higher the purity, the higher the price, so chemical purity<analytical purity<Guaranteed reagent.

In terms of purity: chemical purity<analytical purity<excellent grade, the purity of superior grade is the highest, which can reach more than 99.8%

About analytical pure, chemical pure, Guaranteed reagent:
  • Analytical pure (AR, red label) (secondary product), the purity is slightly lower than the Guaranteed reagent, and the impurity content is slightly higher than the superior pure, suitable for important analysis and general research work, such as general laboratories, research institutes, etc. Commonly used reagents. Often expressed in AR. Analytical pure refers to the reagents used for analysis and determination, with very few impurities, which do not hinder the analysis and determination

  • Chemically pure (CP) is the purity specification of chemical reagents, belonging to the third-grade product, with a label of medium blue, used for analysis experiments with lower requirements and synthesis experiments with higher requirements. The content of the main component is high, the purity is high, and there are interfering impurities, which is suitable for chemical experiments and synthetic preparations.

  • Guaranteed reagent(GR) is the purity specification of chemical reagents, which belongs to the first-class product, and the label is dark green. It is used for precise analysis tests and can be used as a reference substance. The content of main components is very high and the purity is very high, which is suitable for precise analysis and research work, and some can be used as reference substances.


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