Assertion: hydrogen sulfide's concentration | /r/HasProperty | ppm
Facets:
Source sentences:
text: The sensor absorbs the hydrogen sulfide present in the sample and undergoes an increase in electrical resistance proportional to the mass of H 2 S in the sample, allowing the instrument to calculate and display the measured concentration of hydrogen sulfide in parts per million (ppm) or parts per billion (ppb).
text: Concentration (ppm)