Assertion: hydrogen fluoride's impurity | /r/AtLocation | hydrogen fluoride
Facets:
Source sentences:
text: The amount of fluorine to be used is determined suitably according to the concentration of impurities contained in hydrogen fluoride.
text: Listed below are the amounts of impurities contained in hydrogen fluoride before and after the purification.
text: Listed below are the amounts of impurities contained in hydrogen fluoride before and after the purification.