About: http://webisa.webdatacommons.org/23154074

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 membrane used is a reverse osmosis membrane, an ultrafiltration membrane or a microfiltration membrane, and its pore size ranges from about 50 A to about 5??.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca