Table 2 Number of positive test portions out of five test portions generated with D/E, Letheen and HiCap neutralizing broths when using an initial inoculation level of ~ 800 CFU/square and ~ 3000 CFU/square of Lm and different concentrations of Whisper™ V were applied to Lm cells before sampling. Neutralizing broths were stored at 4 °C before sample collection
| Inoculation levels | Neutralizing Broth | Number of positive test portions at each quat concentration | ||||
|---|---|---|---|---|---|---|
| 8000 ppm | 4000 ppm | 1600 ppm | 800 ppm | 400 ppm | ||
| ~ 800 CFU/square | Letheen | 0 | 3 | 1 | 2 | 4 |
| D/E | 1 | 0 | 1 | 3 | 3 | |
| HiCap | 1 | 1 | 1 | 3 | 4 | |
| ~ 3000 CFU/square | Letheen | 0 | 4 | 4 | 5 | 5 |
| D/E | 5 | 3 | 2 | 4 | 5 | |
| HiCap | 3 | 5 | 4 | 5 | 5 | |