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B
ird
et al
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J
ournal of
AOAC I
nternational
V
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97, N
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1571
Table 3. Individual collaborator results for raw ground beef (25 g test portions)
a
Lab
High-level test portions
Low-level test portions
Uninoculated test portions
1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12
3M Petrifilm SALX System
b
1
+ + + + + + + + + + + + – + + – + – – – – + + + – – – – – – – – – – – –
2
+ + + + + + + + + + + + + – + – + – + + + + – + –
d
– – – – – – – – – – –
3
+ + + + + + + + + + + + + – – – – + – – + + – + – – – – – – – – – – – –
4
e
n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a
5
+ + + + + + + + + + + + + + – – + – + – + + – – – – – – – – – – – – – –
6
e
+ + + + + + + + + + + + – – – – + – – – – – + – – – – – – – – – – – – –
7
+ + + + + + + + + + + + + – – – + + – – – -
+ – – – – – – – – – – – – –
8
+ + + + + + + + + + + + + + + + + + – – – -
+ – – – – – – – – – – – – –
9
e
n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a
10
+ + + + + + + + + + + + – – – + – – + + + + + + – – – – – – – – – – – –
11
+ + + + + + + + + + + + – + + – – + – + – + + – – – – – – – – – – – – –
12
+ + + + + + + + + + + + + – + – – + – – – + + – – – – – – – – – – – – –
13
+ + + + + + + + + + + + – + + – + + –
d
– + – + + – – – – – – – – – – – –
14
+ + + + + + + + + + + + – + + + – + – – – + – – – – – – – – – – – – – –
15
+ + + + + + + + + + + + – + – – + – + + + – + – – – – +
c
– – – – – – – –
16
+ + + + + + + + + + + + – + – – – + + + – + – – – – – – – – – – – – – –
17
+ + + + + + + + + + + + + + + – – –
d
– + + + – – – – – – – – – – – – – –
USDA/FSIS-MLG
d
1
+ + + + + + + + + + + + – – – + + + + + – – + + – – – – – – – – – – – –
2
+ + + + + + + + + + + + – + – + + – + + – + – – – – – – – – – – – – – –
3
+ + + + + + + + + + + + + – – – – + – – + – + – – – – – – – – – – – – –
4
e
n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a
5
+ + + + + + + + + + + + + + + – – + + + + + – – – – – – – – – – – – – –
6
e
+ + + + + + + + + + + + + – + + – + – – – – + – – – – – – – – – – – – –
7
+ + + + + + + + + + + + + + + – + – – – + – – + – – – – – – – – – – – –
8
+ + + + + + + + + + + + + – + + + – + + + – – – – – – – – – – – – – – –
9
e
n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a
10
+ + + + + + + + + + + + + – + – – – + – + + + – – – – – – – – – – – – –
11
+ + + + + + + + + + + + + – + – + – – – + – + + – – – – – – – – – – – –