About: http://webisa.webdatacommons.org/171379995

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 pH can if necessary be controlled by using a pH meter coupled with a source of a suitable base such as an alkali metal hydroxide, for example potassium or sodium hydroxide.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com