Assertion: fused quartz | /r/HasProperty | cleaned
Facets:
value: by placing it
type: MANNER
Source sentences:
text: The fused quartz should be cleaned by placing it in a 7% maximum solution of Ammonium Bifluoride for no more than ten (10) minutes, or a 10% volume maximum solution of Hydrofloric Acid for no more than five (5) minutes.