1 water treatment chemicals for use in contained bodies of water, such as pools and spas, and the like; water treatment chemicals for use in industrial and recirculating water systems, such as water cooling systems, waste water systems, and the like
5 biocides and algaecides for use in contained bodies of water, such as pools and spas, and the like; biocides and algaecides for use in industrial and recirculating water systems, such as water cooling systems, waste water systems, and the like