About: http://webisa.webdatacommons.org/17368595

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	Fillers such as glass powder, glass fibers, silicates, graphite, pigments, metal powders, etc., that impart a more negative zeta potential to the membrane, can be used.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk