About: http://webisa.webdatacommons.org/188598953

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	of contaminants in stack emissions, ambient air, high purity gases, air and other gases.All sample wetted components, including the sample filter are housed in the heated oven.
http://www.w3.org/ns/prov#wasQuotedFrom	environmental-expert.com