# Commission Regulation (EC) No 152/2009 of 27 January 2009 laying down the methods of sampling and analysis for the official control of feed (Text with EEA relevance), Division 8: Results of a collaborative study

Extent: E+W+S+N.I.

A collaborative study was arranged in which three poultry feeds (sample 1-3), one mineral feed (sample 4) and one premix (sample 5) were analysed. The results are given in the following table:
Sample 1 (blank feed)
Sample 2
Sample 3
Sample 4
Sample 5
L
14
14
14
14
15
n
56
56
56
56
60
mean [mg/kg]
—
45,5
188
5 129
25 140
sr [mg/kg]
—
2,26
3,57
178
550
CVr [%]
—
4,95
1,9
3,46
2,2
sR [mg/kg]
—
2,95
11,8
266
760
CVR [%]
—
6,47
6,27
5,19
3,0
nominal content [mg/kg]
—
50
200
5 000
25 000
Lnumber of laboratories
nnumber of single values
sr standard deviation of repeatability
CVr coefficient of variation of repeatability
sR standard deviation of reproducibility
CVR coefficient of variation of reproducibility.

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Source: https://www.legislation.gov.uk/eur/2009/152/annex/VIII/division/C/division/8 (the official version)
Page: https://openlegislation.uk/eu-regulation-2009-152/annex-VIII/division-C/division-8
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.