Assertion: hydrogen fluoride | /r/ObjectUse | used to etch glass
Facets:
value: in tv picture tubes
type: LOCATION
Source sentences:
text: At work: Those who work in industries where fluoride-containing substances are used (most notably in the electronics industry where hydrogen fluoride may be used to etch glass in TV picture tubes or to clean silicon chips and in aluminum and phosphate fertilizer plants) may be exposed to high levels of fluoride from breathing in hydrogen fluoride or fluoride-
text: Hydrogen fluoride is also used for etching glass and metal.