About: http://webisa.webdatacommons.org/157505556

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	If the supporting surface is polluted with an oil film, grease or other contaminants, there is a plastic deformation when the test load is applied and the result of the indentation measurement is falsified.
http://www.w3.org/ns/prov#wasQuotedFrom	hegewald-peschke.com