About: http://webisa.webdatacommons.org/151612382

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	An alkali, such as sodium hydroxide, may also be used unless it is inconvenient for the formation of pores by etching.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com