# 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 4.1

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

Exactly weigh around 3 g of oil in a glass flask (not to be reused); hermetically seal it. Place it in a thermostat at 70 °C for one hour. Using a syringe carefully remove 0,2 to 0,5 ml of the head space. Inject this into the column of the gas chromatography apparatus regulated as follows:
injector temperature: 150 °C,
column temperature: 70 to 80 °C,
detector temperature: 200 to 250 °C.
Other temperatures may also be used provided the results remain equivalent.

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Source: https://www.legislation.gov.uk/eur/1991/2568/annex/XI/division/4/division/4.1 (the official version)
Page: https://openlegislation.uk/eu-regulation-1991-2568/annex-XI/division-4/division-4.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.