Carbon filters are used in air conditioning and ventilation systems as well as in varnishing and industrial installations for removing filtered air, e.g. exhaust gases, dioxins and mercury. Activated carbon filters are also used to clean rooms from hydrocarbons, solvents and organic compounds. Carbon filters should not be used for air filtration, the humidity of which exceeds 70%. For optimal use of the properties of activated carbon, it is recommended to use filters in the F7 class as preliminary filtration before the carbon filter.