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