# 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: PREPARATION OF THE TRIMETHYLSILYL ETHERS

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

Add the silylation reagent (4.8) (Note 6), in the ratio of 50 μl for every milligram of alcoholic compound, in the test tube (3.1) containing the alcoholic compound fraction, avoiding any uptake of moisture (Note 7).
Stopper the test tube (3.1), shake carefully (without overturning) until the compounds are completely dissolved. Leave to stand for at least 15 minutes at ambient temperature and then centrifuge for a few minutes. The clear solution is ready for gas chromatographic analysis.

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Source: https://www.legislation.gov.uk/eur/1991/2568/annex/XIX/part/3/division/5 (the official version)
Page: https://openlegislation.uk/eu-regulation-1991-2568/annex-XIX/part-3/division-5
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.