About: http://webisa.webdatacommons.org/21371183

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 cylinders of both embodiments are made of materials inert to the fluids and vapors and they are preferably made of glass, plastic or other transparent or translucent material to enable see-through for color change of the reagent.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com