The Intelligent Bactericide "CALFA SAT" which removes and cleans any organism (Legionella Bacteria, Slime, Biofilm, Algae) of the water by thousands of attack patterns, also called "Encryption Sterilization". Bacteria can't solve the complicated puzzle, and must not develop to Resistance in hundreds year future.

When chlorine is added to water, it generally forms "hypochlorous acid", the powerful killing form of chlorine, and a hypochlorite ion, a relatively weak form of chlorine. The total of hypochlorous acid and hypochlorite ions is the free available chlorine. also called "FREE chlorine (Powefull effective as Sterilization).  However, Chlorine can combine with ammonia and nitrogen compounds in the water to form chloramines, also called "COMBINED chlorine". By combining with ammonia and nitrogen, free chlorine in the water is disabled.
Chloramines are 80 to 100 times less effective than free chlorine and are formed any time ammonia and nitrogen are in the water. Some of the ammonia and nitrogen compounds are introduced into the water by wind blows from agriculture fields, food factories, organic chemistry factories, the sea, and main streets congested with traffic . If your cooling towers are located near that, Nitrogen level in water of your cooling towers goes up easily. also Ammonia and nitrogen compounds are introduced into the water by rain. Each drop of rain has some dissolved nitrogen from the atmosphere.

HOCl + NH 3 = NH 2 Cl + H 2 O hypochlorous acid + ammonia = monochloramine + water

NH 2 Cl + NH 3 = NHCl 2 + H 2 O monochloramine + ammonia = dichloramine + water

NHCl 2 + NH 3 = NCl 3 + H 2 O dichloramine + ammonia = trichloramine + water