BODC-annotated reference material classifiers BODC-annotated reference material classifiers Reference material classifiers Reference material classifiers Terms used to classify the type of reference material used by laboratories in the verification of analytical techniques in terms of consistency, accuracy and precision 2014-03-27 02:00:03.0 2 British Oceanographic Data Centre Natural Environment Research Council British Oceanographic Data Centre British Oceanographic Data Centre Governance for vocabularies used within the data centre SDN:B03::CRM SDN:B03::CRM 2014-03-26 12:29:51.0 SDN:B03::CRM Certified Reference Material A Reference Material, accompanied by a certificate, one or more of whose property values are certified by a procedure which establishes its traceability to an accurate realisation of the unit in which the property values are expressed and for which each certified value is accompanied by an uncertainty at a stated level of confidence. The certification is issued by an organisation generally accepted to be technically competent in the appropriate discipline. 1 1 2014-03-26 12:29:51.0 accepted false SDN:B03::LRM SDN:B03::LRM 2014-03-26 12:29:51.0 SDN:B03::LRM Laboratory Reference Material A material developed by a laboratory for its own internal quality assurance use. The material is not certified by an external source. 1 1 2014-03-26 12:29:51.0 accepted false