What does USP Grade mean?

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Chemical Grade Definitions from Highest to Lowest Purity. 1. A.C.S. A chemical grade of highest purity and meets or exceeds purity standards set by American Chemical Society (ACS).   2. Reagent High purity generally equal to A.C.S. grade and suitable for use in many laboratory and analytical applications.   3. U.S.P. A chemical grade of sufficient […]