# 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 3.1

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

Diethyl ether; 95 % ethanol (v/v), mixture of equal parts by volume.
Neutralize precisely at the moment of use with the potassium hydroxide solution (3.2), with the addition of 0,3 ml of the phenolphthalein solution (3.3) per 100 ml of mixture.

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Source: https://www.legislation.gov.uk/eur/1991/2568/annex/II/division/3/division/3.1 (the official version)
Page: https://openlegislation.uk/eu-regulation-1991-2568/annex-II/division-3/division-3.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.