About: http://webisa.webdatacommons.org/226324803

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	Since perlite is a form of natural glass, it is classified as chemically inert and has a pH of approximately 6.5 - 7.5.
http://www.w3.org/ns/prov#wasQuotedFrom	perliteco.com