About: http://webisa.webdatacommons.org/2331427

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	For use with a optical emission spectrometer the source is provided with a window or lens in place of the ion-extraction aperture, and the chamber is completely sealed except for the gas inlet and an
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com