# Commission Regulation (EC) No 2870/2000 of 19 December 2000 laying down Community reference methods for the analysis of spirits drinks, Division 6.5.1: Elution characteristics of solvents A (4.6.2) and B (4.6.3):

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

shift from 20/80 (v/v) to 50/50 (v/v) gradient in 15 minutes,
shift from 50/50 (v/v) to 75/25 (v/v) gradient in five minutes,
equal strength at 75/25 (v/v) for five minutes,
stabilisation of the column between injections,
equal strength at 20/80 (v/v) for five minutes.

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Source: https://www.legislation.gov.uk/eur/2000/2870/annex/division/VII/division/6/division/6.5/division/6.5.1 (the official version)
Page: https://openlegislation.uk/eu-regulation-2000-2870/annex/division-VII/division-6/division-6.5/division-6.5.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.