1
Filtering materials [vegetable substances]; Carbon for filters; Filtering media [mineral substances]; Ceramic materials in particulate form, for use as filtering media; Filtering materials [mineral substances]; Filtering materials [chemical preparations]; Filtering compositions; Filtering media [chemical] for water; Filtering materials [unprocessed plastics]; Fibres of organic material for separation purposes; Filter aids for liquid purification; Carbon for filters for removing organic contaminants from water; Water testing chemicals; Agents (Chemical -) for use in water purification
7
Filter housings being parts of machines; Pumps; Pump installations; Pumps [machines]; Electrical pumps; Sewage treatment machines; Water supply machines [pumps]; Aquarium pumps; Shower pumps; Electrical pumps for ponds; Water extracting machines; Pumps for the extraction of liquids [machines]; Self-regulating pumps [other than for the delivery of fuel at filling stations]; Engine driven water pumps
11
Filters for sanitary water distribution apparatus; Strainers for water lines; Filters for use with swimming pools; Filters for ponds; Filters for use with apparatus for water supply; Filters for water purifiers; Filters for drinking water; Filters for use in aquariums; Filter apparatus for water supply installations; Filters for industrial installations; Filter boxes for water purification; Apparatus for filtering drinking water; Water filtering apparatus; Industrial installations for filtering liquids; Filter elements for the overflows of water supply tanks; Filters [parts of household or industrial installations]; Water conduits installations; Water purification installations; Water treatment filters; Water filtering apparatus for domestic use; Water filtering units for aquariums; Water purifying apparatus and machines; Water filters for industrial purposes; Water supply installations; Water filtering apparatus for industrial use; Regulating apparatus being parts for water apparatus; Basins being part of water supply installations; Power filters for water purification [other than machines]; Appliances for water filtration [other than machines]