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Document 2 of 2 – 3M Petrifilm Salmonella Express PTM Study Report
Table 16. 3M Petrifilm SALX Method Comparison Chi-Square Results for Pasteurized Liquid Whole Eggs vs BAM (Internal Data)
1
Confirmed
positive by
3M
Confirmation
Disk
Reference
Method
Control
N/A
< 0.075
5
0
0
0
0
-
0.2-2 CFU/
S. enterica
ser.
Enteritidis
1.15
Test Portion
ATCC
13076
(0.70-2.07)
Control
N/A
< 0.075
5
0
0
0
0
-
0.2-2 CFU/
S. enterica
ser.
Enteritidis
1.15
Test Portion
ATCC
13076
(0.70-2.07)
0.98
USDA/FSIS
MLG
X
2
Alternative
Confirmation
X
2
Traditional
Confirmation
Presumptive
positive test
portions on
3M SALX
Plates
Confirmed
18 Hr Primary Enrichment
Inoculation
Level
Inoculating
Organism
APC
CFU/g MPN/25g*
Total
Samples
3M Petrifilm SALX Method
0.98
0.98
24 Hr Primary Enrichment
6.0 x 10
1
20
6
6
6
4
0.98
6.0 x 10
1
20
6
6
6
4
2
*Includes 95% confidence intervals
3
4
5
6
7
8
9
10
11
12
13
14
15