1
Chemicals used in the water treatment industry; chemicals for use in treating waste water; chemicals for maintaining, purifying, treating, softening swimming pool, spa and hot tub water; anti-freeze for swimming pools; agents for regulating the pH value; chemical agents for measuring water quality; anti-scale preparations for swimming pools; chlorine; scale removing preparations, other than for household purposes; hygienic preparations for treating swimming pool, spa and hot tub water
5
Herbicides, algicides and sanitizers for swimming pools, spas and hot tubs; disinfectants for treating swimming pool, spa and hot tub water
11
Apparatus for lighting and heating; water treatment equipment; cartridges, floaters, feeders, and dispensing containers adapted to hold chemicals for use in the treatment of water, swimming pools and spas; swimming pool and spa filters, replacement filter cartridges, pool and spa lighting systems, pool and spa heaters, spa baths; swimming pool and spa chlorinating units, and replacement parts for the foregoing