# Commission Regulation (EU) 2015/705 of 30 April 2015 laying down methods of sampling and performance criteria for the methods of analysis for the official control of the levels of erucic acid in foodstuffs and repealing Commission Directive 80/891/EEC (Text with EEA relevance), Division C.3.3.2: ‘Fitness-for-purpose’ approach

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

For in-house validated methods, as an alternative a ‘fitness-for-purpose’ approach may be used to assess their suitability for official control. Methods suitable for official control shall produce results with a combined standard measurement uncertainty (u) less than the maximum standard measurement uncertainty calculated using the formula below:
Uf=LOD∕22+αC2where:
Uf is the maximum standard measurement uncertainty (μg/kg);
LOD is the limit of detection of the method (μg/kg). The LOD must meet the performance criteria set out in point C.3.3.1 for the concentration of interest;
C is the concentration of interest (μg/kg);
α is a numeric factor to be used depending on the value of C. The values to be used are given in Table 6.
Table 6
Numeric values to be used for α as constant in formula set out in this point, depending on the concentration of interest
C (μg/kg)
α
≤ 50
0,2
51-500
0,18
501-1 000
0,15
1 001-10 000
0,12
> 10 000
0,1

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Source: https://www.legislation.gov.uk/eur/2015/705/annex/part/C/division/C.3/division/C.3.3/division/C.3.3.2 (the official version)
Page: https://openlegislation.uk/eu-regulation-2015-705/annex/part-C/division-C.3/division-C.3.3/division-C.3.3.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.