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.
How Does Ozone Work
IPS Ozone & Negative
Ion Air Purifiers
Air Purifier Buying Guide |
