# 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 3.5.3: Calibration solutions

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

Into a series of 50 ml graduated flasks transfer 1,0, 2,0, 5,0, 10,0, 15,0 and 20,0 ml of the intermediate standard solution (3.5.2). Make up to the mark with the mobile phase (3.4) and mix. Wrap the flasks with aluminium foil. These solutions correspond to 0,5, 1,0, 2,5, 5,0, 7,5 and 10,0 μg of olaquindox per ml respectively.
These solutions must be prepared fresh each day.

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Source: https://www.legislation.gov.uk/eur/2009/152/annex/VIII/division/B/division/3/division/3.5.3 (the official version)
Page: https://openlegislation.uk/eu-regulation-2009-152/annex-VIII/division-B/division-3/division-3.5.3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.