AOAC Final Action Methods in 2017
P ACQUETTE & T HOMPSON : J OURNAL OF AOAC I NTERNATIONAL V OL . 101, N O . 2, 2018 551
Table 4. ( continued )
Sample
1 a
2 b
3 c
4 d
5 e
6 f
Parameter
HorRat value
2.07
0.49
2.01
1.82
0.28
0.22
Repeatability limit SMPR for products Reproducibility limit SMPR for products
5
5
5
5
5
5
10
10
10
10
10
10
Copper
Year of interlab test
2016
2016
2016
2016
2016
2016
No. of labs submitting results
10
9 3
10
9 4
9 4
10
No. of outliers (individual replicates)
0
0
0
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No. of accepted results
20
15
20
14
14
20
Overall mean of all data (grand mean) g
0.00420 0.0015 0.0042
0.0498 0.0014 0.0030
0.0345 0.0022 0.0099
0.00520
0.00400 0.00019 0.00030
0.1172 0.0016 0.0049
0.000050
S r
S R
0.00029
h
6.31 h
RSD r RSD R
36.00 99.00
2.90 5.94
0.97 5.49
4.66 7.47
1.40 4.16
h
28.59 h 0.0061
Repeatability limit r (r = 2.8 × s r ) Reproducibility limit R (R = 2.8 × s R )
0.0042
0.00404
0.00014 0.00080
0.00052 0.00084
0.0046
0.012
0.0083
0.028
0.014
HorRat value
3.86
0.33
1.52
0.22
0.29
0.27
Repeatability limit SMPR for products Reproducibility limit SMPR for products
5
5
5
5
5
5
10
10
10
10
10
10
Zinc
Year of interlab test
2016
2016
2016
2016
2016
2016
No. of labs submitting results
10
10
9 2
10
10
10
No. of outliers (individual replicates)
0
0
0
0
1
No. of accepted results
20
20
16
20
20
19
Overall mean of all data (grand mean) g
0.0844
2.46
0.182 0.006 0.043
0.388 0.004 0.010
0.356 0.004 0.017
0.871 0.014 0.032
0.028 0.042
0.029
S r
S R
0.10
h
RSD r RSD R
33 50
1.2 4.3
3.4 24 h
1.1 2.6
1.2 4.9
1.7 3.7
h
Repeatability limit r (r = 2.8 × s r ) Reproducibility limit R (R = 2.8 × s R )
0.08 0.12 3.03
0.08 0.29 0.43
0.02 0.12 1.61
0.01 0.03 0.20
0.01 0.05 0.37
0.04 0.09 0.32
HorRat value
Repeatability limit SMPR for products Reproducibility limit SMPR for products
5
5
5
5
5
5
10
10
10
10
10
10
Chromium
Year of interlab test
2016
2016
2016
2016
2016
2016
No. of labs submitting results
8 1
8 0
7 4
7 0
8 0
8 0
No. of outliers (individual replicates)
No. of accepted results
15
16
10
14
16
16
Overall mean of all data (grand mean) g
0.00180 0.00040
0.00800 0.0061 0.0068 76.00 h 85.00 h
0.00560 0.0012 0.0028 20.60 h 50.00 h 0.0032 0.0078
0.00040
0.00030 0.00012 0.00022
0.0029
0.000084
0.00049 0.0021 17.00 h 74.00 h 0.0014 0.0060
S r
0.0013
0.00030
S R
h
21.00 h 75.00 h
39.00 h 72.00 h
RSD r RSD R
22.40 70.70
h
Repeatability limit r (r = 2.8 × s r ) Reproducibility limit R (R = 2.8 × s R )
0.0011 0.0036
0.017 0.019
0.00024 0.00084
0.00033 0.00060
HorRat value
2.43
3.65
2.02
2.04
1.85
2.71
Repeatability limit SMPR for products Reproducibility limit SMPR for products
5
5
5
5
5
5
15
15
15
15
15
15
Molybdenum
Year of interlab test
2016
2016
2016
2016
2016
2016
No. of labs submitting results
8
8
7
8
8
8
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