About: http://webisa.webdatacommons.org/407416806

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 test result is determined by comparing the colour produced in the substrate solution with positive controls or with a colour chart.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es