# certified reference material

> standards used to check the quality and metrological traceability of products

**Wikidata**: [Q906323](https://www.wikidata.org/wiki/Q906323)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Certified_reference_materials)  
**Source**: https://4ort.xyz/entity/certified-reference-material


## References

1. Freebase Data Dumps. 2013
2. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)