# Third Commission Directive of 27 September 1983 on the approximation of the laws of the Member States relating to methods of analysis necessary for checking the composition of cosmetic products (83/514/EEC), Division 8.2: The amount of hexachlorophene in the sample

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

Let:
h the hexachlorophene,
kh its proportionality coefficient,
Ah its peak area,
s the chosen standard,
ms its mass (in grams) in the mixture,
As its peak area,
M the mass (in grams) of the sample taken,
then % (m/m) of hexachlorophene in the sample is:
m s × k h × A h × 100 M × A s

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Source: https://www.legislation.gov.uk/eudr/1983/514/annex/division/15/division/B/division/8/division/8.2 (the official version)
Page: https://openlegislation.uk/eu-directive-1983-514/annex/division-15/division-B/division-8/division-8.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.