From MM forum by Bob Wittkamp on 09-17-99



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Steve and Dennis: Here is what Dr. Aziz siad in his presentation at ISCT in August
   " Q. Ozone is a strong oxidizer and it becomes even a more powerful oxidizing agent in the presence of water. Why?"
   " A. Ozone in water decomposes to hydroxyl radicals, which has a higher oxidation potential and acts more rapidly than ozone, chlorine, hydrogen peroxide or sulfur dioxide. Contrary to widely held belief ozone does not produce hydrogen peroxide when reacting with water. In fact hydrogen peroxide cannot coexist. Ozone in water is often
used to kill microbes. However, it is not effective in air as a biocide (i.e. killer of bacteria and fungi), except at extremely high, unsafe levels (more than 3000ppb).
Permitted exposure limit at workplaces is 100ppb."