KILLS BACTERIA 2 WAYS

water purification materials, namely, bactericides and algaecides, contained in cartridges and dispensers for use in killing bacteria and algae in swimming pool, hot tub and spa; algaecides and bactericides for swimming pool, hot tubs and spas; and swimming pool, hot tub and spa equipment, namely, valves for dispensing water purification materials, namely, bactericides and algaecides in swimming pool, hot tub and spa