About: http://webisa.webdatacommons.org/369109277

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	Because the measurement is a percentage of a standard, pure water, the exact construction of the system is not important, and calibration is rapid and accurate.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.in