About: http://webisa.webdatacommons.org/281172666

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 formulations remove the free iron and iron oxides without removing significant amounts of nickel, chromium or other heavy metals.
http://www.w3.org/ns/prov#wasQuotedFrom	pfonline.com