Certified Reference Material

{
  "id": "MLC-T-ENV-004625",
  "term": "Certified Reference Material",
  "field": "Environment",
  "definition": "1. Reference material characterized by a metrologically valid procedure for one or more specified properties, accompanied by a certificate that provides the value of the specified property, its associated uncertainty, and a statement of metrological traceability. Certified Reference Materials (CRMs) are 'controls' or standards used to check the quality and metrological traceability of products, to validate analytical measurement methods, or for the calibration of instruments. A certified reference material is a particular form of measurement standard. {OW/TSC}\n\n2. Reference material characterized by a metrologically valid procedure for one or more specified properties, accompanied by a certificate that provides the value of the specified property, its associated uncertainty, and a statement of metrological traceability. Certified Reference Materials (CRMs) are 'controls' or standards used to check the quality and metrological traceability of products, to validate analytical measurement methods, or for the calibration of instruments. A certified reference material is a particular form of measurement standard.\n\n3. Material that has been certified or verified by either NIST or other NMI ( e.g., VSL, NPL) and may be used for traceability purposes.",
  "abbreviation": "CRM",
  "subject": "Policy and guidance",
  "references": [
    "Forum on Environmental Measurements (FEM) Glossary",
    "40 CFR Appendix B to Part 60 (CFR 2024)"
  ],
  "url": "https://mlchart.com/terminology/environment/certified-reference-material/"
}