Pharmacopoeia & Metrological Institutes Standards

Sigma-Aldrich distributes Chemical Reference Substances and Reference Standards from the world’s three leading pharmacopoeias: the United States Pharmacopoeia (USP), the European Pharmacopoeia (EP), and the British Pharmacopoeia (BP). Also available are the internationally recognized National Metrology Institute standards including BAM, NIST, NMIA and IRMM/BCR. These analytical standards can be used for a variety of method verification practices including instrument qualification and calibration, analytical method validation, system suitability testing, assays and quality control checks.

Search by product name/number, CAS number, or molecular formula



Search Tips:
  • To look up multiple component mixtures, enter component names separated by commas
  • When searching by CAS No., hyphenation is optional
Search by Agency/Method


Custom Capabilities
Our quality products and solutions allow you to work smarter, enabling the community a safe and healthier world.


Featured Application
LC/MS Analysis of Pain Management Opioids on Ascentis® Express Phenyl-Hexyl


Contact Us
Contact us with any comments or questions.