Assertion: corrosion metal impurity | /r/HasProperty | removed
Facets:
value: by stirring the mixture
type: MANNER
Source sentences:
text: It is acknowledged that heavy metal impurities in cosmetic products are unavoidable due to the ubiquitous nature of these elements, but should be removed wherever technically feasible.
text: Metal impurities can be removed by stirring the mixture in either of the two acids and recovering the remaining platinum.