About: http://webisa.webdatacommons.org/180946755

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	The process minimizes impurities such as sodium and other alkali or alkaline earth metals.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr