
Rev E 1/14/15 pg. 43
Collaborative
Laboratory No.
1 1 2.1 14.5 22.6 9.8 4.7 11.0 17.5 6.4 3.7 2.8 1.3
2 1.8 14.2 22.4 9.9 4.9 10.7 17.2 6.5 4.0 2.9 1.3
2 1 1.7 14.8 C 22.5 7.2 C 4.4 10.4 17.4 5.8 3.4 2.6 7.1 C
2 2.0 20.2 C 23.0 10.1 C 4.7 11.1 17.4 6.0 3.5 2.8 1.0 C
3 1 1.6 14.1 22.5 10.1 4.6 10.8 17.6 6.6 3.9 3.1 2.0
2 1.9 14.6 22.5 10.3 4.7 10.9 17.6 6.8 4.0 3.2 1.6
4 1 1.6 14.2 22.2 9.5 4.4 10.6 17.1 6.2 3.4 3.0 1.3
2 1.7 14.7 22.2 9.9 4.7 10.5 16.9 6.4 3.7 2.9 1.3
5 1 1.5 13.9 22.7 9.5 4.8 10.5 17.3 5.9 3.6 2.8 1.3
2 1.8 14.5 22.4 10.1 4.7 10.5 17.6 6.0 3.5 2.7 1.4
6 1 1.8 14.1 22.6 9.3 4.7 10.9 17.2 6.3 3.7 2.8 1.2
2 2.0 14.3 21.9 9.4 4.5 10.4 17.2 6.1 3.8 3.0 1.3
7 1 1.7 14.5 24.0 10.0 4.8 10.7 17.4 6.1 3.7 3.0 1.2
2 1.5 14.8 23.6 10.0 4.3 10.4 17.4 6.2 4.0 2.9 1.1
8 1 1.6 15.0 22.3 9.3 4.6 10.7 17.4 C 6.0 C 3.7 2.5 0.5
2 1.6 14.4 22.9 10.0 4.3 10.8 2.4 C 5.2 C 3.4 2.6 1.1
9 1 1.4 14.4 21.9 8.9 4.6 10.4 17.0 5.9 3.4 2.7 1.3
2 1.8 14.3 22.6 9.6 4.2 10.4 16.6 5.9 3.7 2.7 1.2
10 1 1.7 14.1 21.4 9.3 4.5 10.8 17.0 6.3 3.8 2.9 1.4
2 1.7 14.2 22.1 9.8 4.8 10.9 17.3 6.3 3.6 2.8 1.4
11 1 1.4 14.3 23.3 8.5 4.7 10.9 17.7 C 6.1 3.6 2.8 1.3
2 1.5 15.9 24.1 8.9 5.5 11.9 19.1 C 6.2 4.2 2.9 0.6
Mean 1.69 14.44 22.62 9.60 4.65 10.73 17.27 6.21 3.70 2.83 1.25
Official Method Laboratories
a
% Crude Fiber
Central Analytical 1.8 14.5 23.0 10.2 4.4 9.3 G 14.7 G 6.8 2.9 1.9 G 3.4 G
Hahn Laboratories, Inc. 2.0 14.0 21.2 8.4 4.2 10.6 17.4 5.7 4.2 2.9 1.6
SDSU Olson Bio. Lab 2.4 14.2 23.8 10.1 4.6 10.8 17.4 6.8 4.1 2.8 1.3
Mean 2.05 14.23 22.67 9.57 4.40 10.70 17.40 6.43 3.73 2.85 1.45
Outliers: C-Chochran, G-Grubbs, DG-Double Grubbs
a
AOCS Official Method Ba 6-84, AOAC 962.09
Table 1. Results of the international collaborative study of the Filter Bag Technique for crude fiber compared
with three laboratories using an Official Crude Fiber Method.
Number of laboratories 11 10 11 10 11 11 9 10 11 11 10
Number of replicates 22 20 22 20 22 22 18 20 22 22 20
Overall FBT mean 1.69 14.44 22.62 9.60 4.65 10.73 17.27 6.21 3.70 2.83 1.25
Official Method mean
a
2.05 14.23 22.67 9.57 4.40 10.70 17.40 6.43 3.73 2.85 1.45
S
r
0.16 0.44 0.36 0.32 0.26 0.28 0.18 0.10 0.20 0.09 0.23
S
R
0.19 0.44 0.67 0.48 0.27 0.33 0.28 0.27 0.22 0.17 0.31
RSD
r
, %
9.6 3.1 1.6 3.3 5.5 2.6 1.1 1.6 5.3 3.3 18.1
RSD
R
,%
11.4 3.1 2.9 5.0 5.8 3.1 1.6 4.3 6.0 6.0 24.5
r 0.46 1.23 1.00 0.88 0.72 0.80 0.51 0.27 0.55 0.26 0.64
R 0.54 1.23 1.86 1.34 0.75 0.94 0.78 0.75 0.62 0.48 0.86
HORRAT VALUE 3.07 1.14 1.18 1.75 1.82 1.11 0.62 1.42 1.83 1.75 6.34
a
Official Method AOCS Ba 6-84/AOAC 962.09
Table 2. Summary of the statistical analysis of the Filter Bag Technique crude fiber collaborative study, including
comparison with the Official Method.
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