About: http://webisa.webdatacommons.org/193923686

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	Materials designated as standard grade are suitable for preparation of analytical standards used for a variety of applications including instrument calibration, quality control, analyte identification, and measuring method performance.
http://www.w3.org/ns/prov#wasQuotedFrom	acs.org