Assertion: purified hydrogen fluoride | /r/MadeOf | up to 0.0001 ppm of arsenic
Facets:
Source sentences:
text: The resulting fraction was collected to obtain purified hydrogen fluoride, which was found to contain up to 0.0001 ppm of arsenic and was useful as an electronics material.
text: The purified hydrogen fluoride was found to contain up to 0.0001 ppm of arsenic and was useful as an electronics material.
text: The operation was continued for 10 hours to obtain purified hydrogen fluoride, which was found to contain up to 0.0001 ppm of arsenic.
text: The purified hydrogen fluoride was found to contain up to 0.0001 ppm of arsenic.