1
Carbon for filters; Absorbents consisting of activated carbons; Carbonaceous absorbents for the purification of gases; Filtering materials [chemical preparations]; Filtering materials [unprocessed plastics]; Filtering materials [mineral substances]; Catalysts for separating gaseous hydrocarbons and hydrocarbon compounds
9
Air analysis apparatus; Physics (Apparatus and instruments for -); Electric apparatus and Instruments for the treatment and cleaning of fluids, in particular for the plasma treatment of fluids; Electrodes (electricity), In particular electrodes for plasma generators; Electronic/electric control equipment for electrodes, in particular for plasma generators; Apparatus and instruments for controlling electricity; Apparatus and instruments for transforming electricity; Apparatus and instruments for regulating electricity; Apparatus and instruments for conducting electricity
11
Air treatment equipment; Exhaust hoods [cooker hoods]; Filters for exhaust extractors [parts of household or industrial installations]; Extractor units [ventilation]; HVAC systems (heating, ventilation and air conditioning); Extractor hoods and parts therefor; Air filters for ventilating installations; Air filtering installations; Odour filtering installations; Air-conditioning installations; Air treatment apparatus; Filters for drinking water; Air heating apparatus; Filters for air conditioning; Ionization apparatus for the treatment of air or water; Air cooling apparatus; Air purifying apparatus and machines; Germicidal lamps for purifying air; Baths (Spa -) [vessels]; Air sterilisers; Driers (Air -); Water filtering apparatus; Water purifying installations; Water purifying apparatus and machines; Water sterilizers