About: http://webisa.webdatacommons.org/23950924

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	Typically, these tests kits attempted to determine appropriate levels of substances or properties such as acidity, total chlorine, free chlorine, total hardness as CaCO3, total alkalinity or pH.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk