[Class : 11] Gas Purification Apparatus; Gas Purification Machines; Gas Purification Installations; Filters For Waste Gas Purification; Scrubbing Columns For The Purification Of Gases; Scrubbing Towers For The Purification Of Gases; Apparatus For The Purification Of Liquids; Waste Water Treatment Installations; Waste Water Treatment Tanks; Cartridge Filtration Units [Water Treatment Equipment]; Ultraviolet Sterilization Units [Water Treatment Equipment]; Chemical Sterilization Units [Water Treatment Equipment]; Water Treatment Apparatus For Water Purification; Water Treatment Apparatus For Water Softening; Reverse Osmosis Filtration Units [Water Treatment Equipment]; Water Treatment Apparatus For Water Softening For Domestic Use; Ionization Apparatus For The Treatment Of Water; Ionization Apparatus For The Treatment Of Air Or Water; Water Supply Installations; Water Supply Apparatus; Drinking Water Supply Installations; Hydrants For Water Supply; Drinking Water Supply Apparatus; Terminal Water Supply Fittings; Taps For Water Supply; Hot Water Supply Heaters; Apparatus For Controlling Water Supply; Taps For Water Supply Installations; Toilet Tanks; Flushing Tanks; Pressurised Water Tanks; Pressure Tanks [Water]; Water Purification Tanks.