Certification. What it means for inhomogeneity and reference materials

W. R. Kennedy

Research output: Contribution to journalArticlepeer-review


A comparison is made between concepts Americans and foreigners have of the term certification. The paper discusses the requirements for a Standard Reference Material (SRM) Certificate and a Certified Reference Material (CRM) Certificate, and how what appears on the Certificate affects our concepts of homogeneity and inhomogeneity. Also discussed is why who issues a Certificate sometimes is more important than what is on the Certificate. The paper is a challenge to standardize SRM and CRM Certificates.

Original languageEnglish (US)
Pages (from-to)60-62
Number of pages3
JournalJournal of Testing and Evaluation
Issue number1
StatePublished - Jan 1 1991

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