# 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 2 premixtures (samples 1 and 2) and 5 feeds (samples 3-7) were analysed by 12 laboratories. Duplicate analyses were performed on each sample. The results are given in the following table:
Content declared by manufacturer.
Feed prepared in the laboratory.
Sample 1Chicken premix
Sample 2Turkey premix
Sample 3Turkey pellets
Sample 4Chicken crumbs
Sample 5Turkey Feed
Sample 6Poultry Feed A
Sample 7Poultry Feed B
L
12
12
12
12
12
12
12
n
23
23
23
23
23
23
23
Mean [mg/kg]
5 050
16 200
76,5
78,4
92,9
48,3
32,6
sr [mg/kg]
107
408
1,71
2,23
2,27
1,93
1,75
CVr [%]
2,12
2,52
2,24
2,84
2,44
4,0
5,37
sR [mg/kg]
286
883
3,85
7,32
5,29
3,47
3,49
CVR [%]
5,66
5,45
5,03
9,34
5,69
7,18
10,7
Nominal content [mg/kg]
5 000
16 000
80
105
120
50
35
Lnumber of laboratories
nnumber of single results
sr standard deviation of repeatability
sR standard deviation of reproducibility
CVr coefficient of variation of repeatability, %
CVR coefficient of variation of reproducibility, %.

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