About: http://webisa.webdatacommons.org/293257767

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	A duration of retention in the separator of from about 30 to 50 seconds is generally adequate for the separation of gaseous non-condensables, such as air and hydrogen.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es