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In-package ozone concentration after different HVACP treatment and posttreatment storage times with both E. coli and S. aureus samples
| Posttreatment storage time (h) | Plasma treatment time (min) | Ozone concn (ppm)a |
|
|---|---|---|---|
| Direct | Indirect | ||
| 0 | 1 | 1,600 | 1,800 |
| 3 | 2,400 | 3,000 | |
| 5 | 4,200 | 4,400 | |
| 1 | 1 | 100 | 120 |
| 3 | 180 | 190 | |
| 5 | 330 | 350 | |
| 24 | 1 | ND | ND |
| 3 | ND | ND | |
| 5 | ND | ND | |
ND, nondetectable.
