# Commission Regulation (EEC) No 2568/91 of 11 July 1991 on the characteristics of olive oil and olive-residue oil and on the relevant methods of analysis, Division 4.3: Sample preparation

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

As a number of interfering substances can give rise to false positive results, the sample must always be purified according to IUPAC method 2.507, used for the determination of polar compounds in frying fats.

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Source: https://www.legislation.gov.uk/eur/1991/2568/annex/XVIII/division/4/division/4.3 (the official version)
Page: https://openlegislation.uk/eu-regulation-1991-2568/annex-XVIII/division-4/division-4.3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.