Chemical Purity
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Chemical Purity

Chemical purity is the measurement of the amount of impurities found in a chemical sample. Several grades of purity are used by the scientific, pharmaceutical, and industrial communitiues.[1][2] Some of the commonly used grades of purity include:

  • ACS grade is the highest level of purity, and meets the standards set by the American Chemical Society (ACS). The official descriptions of the ACS levels of purity is documented in the Reagent Chemicals publication, issued by the ACS.[3] It is suitable for food and laboratory uses.
  • Reagent grade is almost as stringent as the ACS grade.
  • USP grade meets the purity levels set by the United States Pharmacopeia (USP). USP grade is equivalent to the ACS grade for many drugs.
  • NF grade is a purity grade set by the National Formulary (NF). NF grade is equivalent to the ACS grade for many drugs.
  • Laboratory grade is suitable for use in educational settings, but is not acceptable for food or drug use.
  • Purified grade is not precisely defined, and it is not suitable for drug or food usage.
  • Technical grade is suitable for industrial applications, but is not acceptable for food or drug use.

References

  1. ^ https://www.labmanager.com/business-management/the-seven-most-common-grades-for-chemicals-and-reagents-2655
  2. ^ https://www.goldbio.com/articles/article/demystifying-material-grades-for-your-laboratory
  3. ^ "About ACS Reagents". ACS Publications. American Chemical Society. Retrieved 2018.

  This article uses material from the Wikipedia page available here. It is released under the Creative Commons Attribution-Share-Alike License 3.0.

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