# 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.

An EC collaborative study was arranged in which four piglet feed samples including one blank feed were analysed by up to 13 laboratories. The results are given below:
Sample 1
Sample 2
Sample 3
Sample 4
L
13
10
11
11
n
40
40
44
44
mean [mg/kg]
—
14,6
48,0
95,4
Sr [mg/kg]
—
0,82
2,05
6,36
SR [mg/kg]
—
1,62
4,28
8,42
CVr [%]
—
5,6
4,3
6,7
CVR [%]
—
11,1
8,9
8,8
Nominal content
[mg/kg]
—
15
50
100
recovery %
—
97,3
96,0
95,4
Lnumber of laboratories
nnumber of single values
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/VIII/division/B/division/8 (the official version)
Page: https://openlegislation.uk/eu-regulation-2009-152/annex-VIII/division-B/division-8
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.