171 / 350
February 20, 2013
37
Table 4. Ruggedness Results for the Evaluation of Varied Primary Enrichment Times and Temperatures.
1
40
41.5
43
16
18
24
26
Salmonella
Typhimurium
ATCC 14028
10
10
10
10
10
10
10
10
0
Salmonella
Poona
NCTC 4840
Citrobacter
braakii
NCTC 4840
Incubation Time, Hours
Number Positive
10
10
0
0
0
0
0
0
0
Isolate
# of
Samples
Incubation Temperature (°C)
Number Positive
10
10
10
10
10
10
2
3
4
Table 5. Ruggedness Results for the Evaluation of Varied Times and Temperatures for the
5
3M Petrifilm Salmonella Express Plate.
6
40
41.5
43
20
22
24
26
28
Salmonella
Typhimurium
ATCC 14028
10
10
10
10
10
10
10
10
10
Isolate
# of
Samples
Incubation Temperature (°C)
Number Positive
Incubation Time, Hours Number
Positive
0
10
0
0
0
0
10
10
10
10
Salmonella
Poona
NCTC 4840
10
10
10
10
Citrobacter
braakii
NCTC 4840
0
0
0
0
7
8
9
10
Table 6. Ruggedness Results for the Evaluation of Varied Times and Temperatures 3M Petrifilm Salmonella
11
Express Confirmation Disk.
12
40
41.5
43
2
3
4
5
6
Salmonella
Typhimurium
ATCC 14028
10
10
10
10
10
10
10
10
10
Isolate
# of
Samples
Incubation Temperature (°C)
Number Positive
Salmonella
Poona
NCTC 4840
10
10
10
10
10
10
10
Citrobacter
braakii
NCTC 4840
10
0
0
0
0
0
10
0
0
10
0
Incubation Time, Hours Number
Positive
13
14
15
16