# 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 5 samples were analysed by 11 laboratories. These samples consisted of two premixtures; one was mixed with an organic matrix (O 100) and the other with an inorganic matrix (A 100). The theoretical content is 100 mg diclazuril per kg. The three mixed feeds for poultry were made by 3 different producers (NL) (L1/Z1/K1). The theoretical content is 1 mg diclazuril per kg. The laboratories were instructed to analyse each of the samples once or in duplicate. (More detailed information on this collaborative study can be found in the Journal of AOAC International, Volume 77, No 6, 1994, p. 1359-1361). The results are given in the following table.
Sample 1A 100
Sample 2O 100
Sample 3L1
Sample 4Z1
Sample 5K1
L
11
11
11
11
6
n
19
18
19
19
12
Mean
100,8
103,5
0,89
1,15
0,89
Sr (mg/kg)
5,88
7,64
0,15
0,02
0,03
CVr (%)
5,83
7,38
17,32
1,92
3,34
SR (mg/kg)
7,59
7,64
0,17
0,11
0,12
CVR (%)
7,53
7,38
18,61
9,67
13,65
Nominal content (mg/kg)
100
100
1
1
1
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/IV/division/F/division/8 (the official version)
Page: https://openlegislation.uk/eu-regulation-2009-152/annex-IV/division-F/division-8
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.