| |
Levels |
Inoculation (CFU/surface) |
Replicates |
TEST (PDX-LIB Labor Savor) |
REFERENCE (USDA) |
Chi Squared Value |
| Presumptive Positives |
Confirmed |
False negatives |
Confirmed positives |
| Listeria innocua on ceramic tile |
-Ctrl |
0 |
5 |
0 |
0 |
0 |
0 |
NA |
| Medium |
4669
46688 |
20 |
19 |
19 |
0 |
6 |
15.36 |
| High |
20 |
20 |
20 |
0 |
19 |
0 |
| Listeria ivanovii on stainless steel |
-Ctrl |
0 |
5 |
0 |
0 |
0 |
0 |
NA |
| Medium |
1175000
11750000 |
20 |
20 |
20 |
0 |
5 |
20.91 |
| High |
20 |
19 |
19 |
0 |
7 |
13.3 |
| Listeria welshmeri on plastic |
-Ctrl |
0 |
5 |
0 |
0 |
0 |
0 |
NA |
| Low |
1506
150563 |
20 |
15 |
15 |
0 |
17 |
1.41 |
| High |
20 |
20 |
20 |
0 |
19 |
0 |
| Listeria monocytogenes in10xE.colion sealed concrete |
-Ctrl |
0 |
5 |
0 |
0 |
0 |
0 |
NA |
| Medium |
715
7156 |
20 |
8 |
9 |
1 |
0 |
7.66 |
|
High |
20 |
14 |
15 |
1 |
3 |
10.23 |
