# 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 7.1: Repeatability

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

The repeatability expressed as ‘within laboratory standard deviation’ of the abovementioned intercomparison is given in the tables below:
Within Laboratory Standard Deviation (Sr) in g/kg
nNumber of participating laboratories.
Reference material
Amino Acid
Threonine
Cyst(e)ine
Methionine
Lysine
Mixed Pig Feed
0,13
n = 15
0,1
n = 17
0,11
n = 17
0,26
n = 13
Broiler Compound
0,2
n = 16
0,11
n = 18
0,16
n = 18
0,28
n = 16
Protein Concentrate
0,48
n = 16
0,13
n = 17
0,27
n = 17
0,99
n = 15
Premixture
1,3
N = 16
—
2,19
n = 16
2,06
n = 16
Coefficient of Variation (%) for Within Laboratory Standard Deviation (Sr)
nNumber of participating laboratories.
Reference material
Amino Acid
Threonine
Cyst(e)ine
Methionine
Lysine
Mixed Pig Feed
1,9
n = 15
3,3
n = 17
3,4
n = 17
2,8
n = 13
Broiler Compound
2,1
n = 16
2,8
n = 18
3,1
n = 18
2,1
n = 16
Protein Concentrate
2,7
n = 16
2,6
n = 17
2,2
n = 17
2,4
n = 15
Premixture
2,2
n = 16
—
2,4
n = 16
2,1
n = 16

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Source: https://www.legislation.gov.uk/eur/2009/152/annex/III/division/F/division/7/division/7.1 (the official version)
Page: https://openlegislation.uk/eu-regulation-2009-152/annex-III/division-F/division-7/division-7.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.