USP currently offers more than 3,500 Reference Standards—highly characterized specimens of drug substances, excipients, food ingredients, impurities, degradation products, dietary supplements, compendial reagents, and performance calibrators. USP Reference Standards are specified for use in conducting official USP–NF tests and assays. USP also provides Reference Standards specified in the Food Chemicals Codex as well as authentic substances—high-quality chemical samples—as a service to analytical, clinical, pharmaceutical, and research laboratories.
IMPORTANT INFORMATION: USP Nystatin Reference Standard Customer Support Guidance (1–May–2017)
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PRICING UPDATE: In our on-going efforts to improve customer service, USP has updated its Strategic Pricing Practices. Our methods and timing of price reviews have been modified across our portfolio to better align to the demand and cost of producing individual Reference Standard categories versus a standard approach across the portfolio. USP will adjust some Reference Standards items, effective on October 1, 2017.
Download October 1, 2017 catalog: EXCEL
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- Official recognition, can help demonstrate compliance—USP Reference Standards that are based directly on official monographs in the USP–NF—whose standards and procedures are enforceable by the U.S. Food and Drug Administration (FDA)—are recognized as official standards in the U.S., and their use is effective in demonstrating compliance with statutory requirements.
- Collaboratively tested—USP Reference Standards are established through a collaborative quality testing process that involves at least three independent labs.
- Cost- and time-saving resource—USP Reference Standards offer a convenient, quality-tested alternative that can help you save costs and resources associated with developing in-house reference materials
- Stocked and ready to ship! USP is proud of its 99% availability rate. USP also offers same-day shipping for applicable orders!
USP Reference Standards are used to demonstrate identity, strength, purity, and quality for medicines, dietary supplements, and food ingredients. Common applications include:
- Limit tests for impurities or related compounds
- Assays for drug substances and for formulations
- System suitability tests
- Chromatographic and spectrophotometric procedures
- Performance verification tests (e.g., particle count, melting point, and standardization of titrants) as calibrators, blanks, and controls
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- How to Use USP Reference Standards and Read Product Listings: Comprehensive primer on using USP Reference Standards and how to read product listings.
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