# 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 5.5: Evaluation of quantity

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

Calculate the areas of the peaks of the internal standard and the aliphatic esters of C 40 to C 46 using the integrator.
Calculate the wax content of each of the esters in mg/kg fat using the formula:
ester, mg ∕ kg = A x × m s × 1000 A s × m
where:
A x area of each ester’s peak, in square millimetres;
A s area of the internal standard’s peak, in square millimetres;
m s mass of added internal standard, in milligrams;
m mass of sample for analysis, in grams.

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Source: https://www.legislation.gov.uk/eur/1991/2568/annex/IV/division/5/division/5.5 (the official version)
Page: https://openlegislation.uk/eu-regulation-1991-2568/annex-IV/division-5/division-5.5
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.