About: http://webisa.webdatacommons.org/438428997

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	EXAMPLE 3 One Component Calcium Assay In this example the buffer not only maintains the pH but also serves as the chelator to prevent magnesium and other heavy metals from interfering in the measurement of calcium.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es