# 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 7.3.4: Restrictions to cut-off values

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

BEQ-based cut-off values calculated from the RSD R achieved during validation using a limited number of samples with different matrix/congener patterns may be higher than the TEQ-based maximum levels or action thresholds due to a better precision than attainable in routine when an unknown spectrum of possible congener patterns has to be controlled. In such cases, cut-off values shall be calculated from an RSD R = 25 %, or two-thirds of the maximum level or action threshold shall be preferred.

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Source: https://www.legislation.gov.uk/eur/2009/152/annex/V/division/B/chapter/II/division/7/division/7.3/division/7.3.4 (the official version)
Page: https://openlegislation.uk/eu-regulation-2009-152/annex-V/division-B/chapter-II/division-7/division-7.3/division-7.3.4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.