Impurities

USP Reference Standards: 5 Tools You Should Know About

Resources for USP Reference Standards Users

Discover convenient tools and helpful tips related to using USP Reference Standards in your work. USP Reference Standards are intended for quality control use in conducting assays and tests in USP’s documentary standards for drugs, dietary supplements, and foods. 

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Top 5 of 2015: Most-Read Quality Matters Blog Posts

Top Five Quality Matters Blog Posts of 2015

Thank you for helping Quality Matters spread the word in 2015 about USP quality standards and the important role our work plays in industry, public health and lives around the world. These five posts are the ones that you, our readers, found to be the most engaging and useful in 2015. 

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Elemental Impurities – Their Impact on Drug Quality

While manufacturers have to ensure the quality and consistency of ingredients that go into a final pharmaceutical product, they must also employ measures for the proper control of unwanted impurities in drugs and drug ingredients.

Today, approximately 80% of all active pharmaceutical ingredients in medicines sold in the U.S. are manufactured in another part of the world. While manufacturers have to ensure the quality and consistency of ingredients that go into final pharmaceutical products, they must also employ measures for the proper control of unwanted impurities in drugs and drug ingredients.

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