1
Chemicals used in industry; Filtering materials [chemical preparations]; Filtering materials [mineral substances]; Filtering materials [vegetable substances]; Ceramic materials in particulate form, for use as filtering media; Cultures of microorganisms, other than for medical and veterinary use; Substrates for soil-free growing [agriculture]; Chemical compositions for water treatment
6
Storage containers for rainwater for above-ground or underground installation; Absorbing wells and retention reservoirs for rainwater; Pipes for above-ground or underground installation; Penstock pipes; Drainage pipes; All the aforesaid goods of metal
11
Refrigerating appliances and installations; Electric and chemical filtering installations (included in class 11) for cleaning and processing rainwater and service water, including gully and drain pipe filters; Sewage purification installations; Regulating and safety accessories for water apparatus; Filters for drinking water; Water filtering apparatus; Water softening apparatus and installations; Water purifying installations; Water purifying apparatus and machines; Water sterilizers; Water supply installations
19
Storage containers for rainwater for above-ground or underground installation; Absorbing wells and retention reservoirs for rainwater; Water pipes (components); Pipes for above-ground or underground installation; Drainpipes; All the aforesaid goods not of metal; Building materials (non-metallic) for storage containers for rainwater for above-ground and underground installation, Absorbing wells and retention reservoirs for rainwater, Water pipes (components), Pipes for above-ground and underground installation, and drain pipes