Inoculation levels | Neutralizing Broth | Number of positive test portions at each quat concentration | Â | |||
---|---|---|---|---|---|---|
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 |