AOAC-RI ERP Book MICRO Sept 2016.pdf
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
3M Petrifilm SALX Method
Confirmed
Confirmed positive by 3M Confirmation Disk
Presumptive positive test portions on 3M SALX Plates
X 2 Alternative Confirmation
X 2 Traditional Confirmation
Reference Method
Inoculation Level
Inoculating Organism
APC CFU/g MPN/25g*
Total Samples
USDA/FSIS MLG
18 Hr Primary Enrichment
Control
N/A
< 0.075
5
0
0
0
0
-
S. enterica ser. Enteritidis
6.0 x 10 1
20
6
6
6
4
0.98
0.98
0.2-2 CFU/
1.15
ATCC 13076
Test Portion
(0.70-2.07)
24 Hr Primary Enrichment
Control
N/A
< 0.075
5
0
0
0
0
-
S. enterica ser. Enteritidis
6.0 x 10 1
20
6
6
6
4
0.98
0.98
0.2-2 CFU/
1.15
ATCC 13076
Test Portion
(0.70-2.07)
2 3 4 5 6 7 8 9
*Includes 95% confidence intervals
10 11 12 13 14 15
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