About: http://webisa.webdatacommons.org/38206730

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	These materials broadly support the private-sector market in secondary reference materials used by businesses, laboratories, and other organizations to certify their measurements and assure the quality of their products.
http://www.w3.org/ns/prov#wasQuotedFrom	nist.gov