About: http://webisa.webdatacommons.org/84933010

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	An apparatus as described in claim 3 wherein said apparatus is a column, said impervious cores being glass beads, said colloidal inorganic microparticles consisting essentially of silica. 5.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com