# 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 3.3

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

Phenolphthalein, 10 g/l solution in 95 to 96 % ethanol (v/v) or alkali blue 6B or thymolphthalein, 20 g/l solution in 95 to 96 % ethanol (v/v). In the case of strongly coloured oils, alkali blue or thymolphthalein shall be used.

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Source: https://www.legislation.gov.uk/eur/1991/2568/annex/II/division/3/division/3.3 (the official version)
Page: https://openlegislation.uk/eu-regulation-1991-2568/annex-II/division-3/division-3.3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.