Effectiveness of ozone

 
Effectiveness of Ozone at Low Levels

In one study, Russian scientists performed a study to see how effective ozone was at improving indoor air quality in schools. Respiratory-related illnesses were drastically improved after the ozone systems were installed. The ozone concentration produced by these ozone systems was 0.015 ppm (parts per million).

In another study, testing was performed by two scientists by the name of Elford and Van den Ende. It was found that ozone effectively destroyed bacteria at 0.04 ppm.

Many publications have published studies showing the effectiveness of lower concentrations ozone (0.01 to 0.03 ppm) at removing odors and pollutants. Some of these include the Refrigeration Service Engineers Society (RSES), U.S. Air Force technical publications, and Manufacturing Chemist.

All IPS air purifiers will produce an ozone concentration of approximately 0.04 ppm.

Test Results

Disinfection of the pollutants below was measured in identical conditions within a containment chamber, with one exception. In one chamber, the pollutants were exposed to a relatively stable 0.05 parts per million of ozone concentration, and normal room air in the other chamber (close to 0 ppm). Pollutant count measurements were taken before, during, and after the 4 hour testing period. Each chamber began with an identical amount of the tested pollutants.

Test Pollutant
Beginning
Count

No Ozone
(After 4 hrs.)

Ozone
(0.05 ppm)
(After 4 hrs.)

Approx. Ratio*

Staphylococcus
7,250,000
6,320,000
940,000
7:1

Aspergillus
4,500
5,500
1,500
5:1

E. Coli
3,500,000
16,500
2,500
7:1

Salmonella
2,500,000
11,200
4,180
3:1

Candida
200,000
560,000
3
186,666:1

Effectiveness of Ozone against Mold
A 1999 study conducted at the University of Minnesota found that both ozonated air and water inactivate mold, rendering the mold cells harmless.