About: http://webisa.webdatacommons.org/411993282

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 non-porous nature of the membranes disclosed here serves to exclude any particulate impurities from passing through such a membrane, including microbes such as bacteria and viruses.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com