Neutralisation columns; Neutralisation installations; Air filter installations; Air filtration machines; Air cleaning apparatus; Air cleaning filters (parts of air cleaning machines or installations); Ionisers for air treatment; Air freshening apparatus; Air freshening instruments; Air dehumidifiers; Compressed air ventilators

Hemofilter, dialyser

Air neutralising apparatus, instruments, machines, and installations; neutralisation columns; air freshening instruments and apparatus; air cleansing apparatus; air cleaning and air purifying apparatus, instruments, and machines; air sterilisers and air sterilising apparatus; ionisers; air filters, air filter membranes, and air filter screens in this class, including scented filters, membranes, and screens