# First Commission Directive of 13 November 1979 laying down Community methods of analysis for testing certain partly or wholly dehydrated preserved milk for human consumption (79/1067/EEC), Division 6.3.3

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

Measure the optical densities of the standards (6.3.1) against the blank test (6.1) at the wavelength specified under 5.2. Plot in a diagram the optical densities against the quantities of lactic acid given under 6.3.1, i.e. 0 mg, 20 mg, 40 mg, 60 mg and 80 mg per 100 g of solids-non-fat. Draw the best fitting straight line through the points and prepare the standard curve by moving this line parallel to itself in such a way that it passes through the origin.

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Source: https://www.legislation.gov.uk/eudr/1979/1067/annex/II/division/7/division/6/division/6.3/division/6.3.3 (the official version)
Page: https://openlegislation.uk/eu-directive-1979-1067/annex-II/division-7/division-6/division-6.3/division-6.3.3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.