# 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 6: Calculation of the results

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

From the mean height (area) of the vitamin A peaks of the sample solution determine the concentration of the sample solution in IU/ml by reference to the calibration graph (5.6.2).
The vitamin A content w in IU/kg of the sample is given by the following formula:
w=500×c×V2×1 000V1×m [IU/kg]
in which:
cvitamin A concentration of the sample solution (5.4) in IU/ml
V1 volume of sample solution (5.4) in ml
V2 volume of aliquot taken in 5.4 in ml
mweight of the test portion in g

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Source: https://www.legislation.gov.uk/eur/2009/152/annex/IV/division/A/division/6 (the official version)
Page: https://openlegislation.uk/eu-regulation-2009-152/annex-IV/division-A/division-6
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.