Chlorine; Biodegradable waste digestant for use in septic systems; Calcium chloride; Chemical analysis kit for testing swimming pool water; Chemical preparations for testing swimming pool water; Chlorinated acids; Liquid chlorine; Shock treatment chemicals for use in swimming pools and spas; Sodium chlorate; Sodium chloride; Water purifying chemicals for swimming pools; Water treatment chemicals for use in swimming pools and spas; Water treatment minerals for use in swimming pools and spas