Air filtering apparatus; Apparatus for filtering breathing air; Apparatus for filtering dust; Apparatus for filtering fumes; Apparatus for filtering gases; Apparatus for filtering water; Apparatus for water filtering; Domestic water filtering apparatus; Domestic water filtering units; Electrostatic air filters; Apparatus for sanitary purposes; Electrical appliances for sanitary purposes; Filters for use with apparatus for sanitary purposes; Fittings for sanitary purposes; Installations for sanitary purposes; Powered sanitary installations; Sanitary apparatus and installations; Sanitary apparatus made from plastics materials; Sanitisers being sanitary apparatus; Steam cleaners being electrical appliances; Air purification apparatus; Air purification apparatus for clean air cabinets; Air purification installations; Air purification machines; Electronic air purification apparatus; Germicidal burners; Germicidal lamps for purifying air