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  1. Certified reference materials - Wikipedia

  2. Reference Material (RM) vs Certified Reference Material (CRM)

  3. Standard Reference Materials | NIST

  4. Certified Reference Materials - MilliporeSigma

  5. Cerilliant-Certified Reference Materials | Certified Reference ...

  6. Standards and Controls - ATCC

  7. Standard Reference Materials | Certified Reference Materials

  8. What are Certified Reference Materials? - XRF

  9. ISO/Guide 33:2015 (en), Reference materials — Good practice in …

  10. Role of Certified Reference Materials (CRMs) in Standardization ...