About: http://webisa.webdatacommons.org/104194043

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	Some employ chemicals such as iodine and chlorine but most are purely mechanical.
http://www.w3.org/ns/prov#wasQuotedFrom	waterfiltercanada.com