Ozone at normal pressures is colorless and produces a pleasing fresh air odor often like that after an old fashioned thunder storm. Under pressure it becomes a bluish gas.

Ozone is also a very powerful bactericide. It is not affected by PH as is chlorine thus making it an excellent candidate for pools, spas, laundries and general water treatment applications. It is many times more soluble in water further enhancing its purifying effect. Ozone will combine with diatomic nitrogen N2 forming nitrous oxide 2NO. This oxide quickly combines with water forming nitric acid HNO3. This is often a very undesirable effect when used with straight air. Pure oxygen greatly minimizes this effect and is often required in many applications.

Chlorine and bromine is often the choice of disinfectant for swimming pools, and spas. The effect of these halogens is often dictated by PH, temperature and agitation. Extreme heat and agitation can produce chloroform, a very toxic carcinogenic. The EPA is already taking a dim look at these chemicals for this use.

Ozonated water will destroy fungus, mold and many pathogens found in water when used for washing fruits and vegetables in packing lines. When discharged, ozone causes little change to the beneficial bacteria in sewage treatment facilities.

Ozone purifies the air from these undesirable pollutants by oxidization as most readily combine with this highly reactive triatomic form of oxygen and break down into water and other non toxic compounds.