About: http://webisa.webdatacommons.org/456327850

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	A variety of materials such as Teflon???, glass fibers and the like can be used for the filter as long as the material is inert and has a fine enough mesh to trap the particles.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es