Interpretation of the policy of certified reference materials &Declaration acceptance specification requirements
Certified Reference Material(CRM)-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.This pa-per interprets the latest national policies on certified reference materials,and explains the requirements of the standard for the application and acceptance of reference materials in combination with the actual work,so as to provide help for the application of reference materials development units.