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elemental impurities

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New USP Elemental Impurities Chapters Near Implementation

On January 1, 2018, USP/NF Chapter 231 on Heavy Metals will be shuttled and new chapters 232, 233 and 2232 on Elemental Impurities will be implemented. What does this mean? It means that the century-old qualitative colorimetric test for the presence of Heavy Metals has been replaced by considerably more sophisticated methods (ICP-OES and ICP-MS)

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