About: http://webisa.webdatacommons.org/327078436

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 penetrant gives the ink, especially a color ink, a low surface tension, preferably less than 55 dyne/cm and ranging from about 20 to about 55 dynes/cm, and more preferably from about 30 to about 45 dyne/cm.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com