About: http://webisa.webdatacommons.org/291350051

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	As mentioned above, it must be ensured that the fluid sample is not spilled onto any part of the apparatus and that, during the extraction of such aliquot, another sample or other material does not contaminate the sample.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com