An indicator that describes the concentration of water vapor in a gas or air, usually expressed as a volume fraction (ppm, % volume) or relative humidity (%)
Shows the physical state of the gas, which affects its suitability for domestic, industrial and technological processes
High humidity can promote corrosion, condensation, reduce gas quality or energy value
Low humidity is important in industries where dry gases are required (e.g. electronics, chemical manufacturing)
In occupational health and safety assessments (air quality, work environment control)
In the control of industrial facilities (gas transportation, storage, technological processes)
In environmental studies (air pollution assessment, climate condition analysis)
