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Document 2 of 2 – 3M Petrifilm Salmonella Express PTM Study Report
Table 18. 3M Petrifilm SALX Method Comparison Chi-Square Results for Cooked Chicken Nuggets vs USDA (Internal Data)
1
Presumptive
positive test
portions on
3M SALX
Plates
Confirmed
positive by
3M
Confirmation
Disk
Control
N/A
< 0.075
5
0
0
0
-
-
0.2-2 CFU/
S. enterica
ser.
Typhimuriu
m
0.03
Test Portion
ATCC
14028
(0.01-0.08)
Control
N/A
< 0.075
5
0
0
0
-
-
0.2-2 CFU/
S. enterica
ser.
Typhimuriu
m
0.03
Test Portion
ATCC
14028
(0.01-0.08)
USDA/FSIS-
MLG
X
2
Alternative
Confirmation
X
2
Traditional
Conformation
18 Hr Primary Enrichment
2.4 x 10
2
20
6
6
6
0
Inoculation
Level
Inoculating
Organism
APC
CFU/g MPN/25g*
Total
Samples
3M Petrifilm SALX Method
0
24 Hr Primary Enrichment
2.4 x 10
2
20
6
6
6
0
0
2
*Includes 95% confidence intervals
3
4
5
6
7
8
9
10
11
12