About: http://webisa.webdatacommons.org/8557271

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 density test is sufficient to distinguish all the plastics except PETE and vinyl, which are easily distinguished by the copper wire and litmus tests, and LDPE and PP, which with care may be distinguished by texture.
http://www.w3.org/ns/prov#wasQuotedFrom	mansfield.edu