About: http://webisa.webdatacommons.org/73754724

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	Muffle tube flanges 28 serve as mounts for rigid or stiff annular end plates 32A and B which preferably are made of quartz but may be made of a stainless steel, molybdenum, graphite or other suitable material.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com