# 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 6.1: Response factor of nitromethane, calculated with reference to the internal standard used

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

If ‘n’ represents nitromethane:
let:
kn its response factor,
m'n its mass (in grams) in the mixture,
S'n its peak area.
If ‘c’ represents the internal standard, chloroform or 2,4-dimathylheptane:
let:
m'c its mass (in grams) in the mixture,
S'c its peak area,
then:
K n = m' n m' c × S' c S' n
(kn is a function o2 the apparatus).

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Source: https://www.legislation.gov.uk/eudr/1983/514/annex/division/13/division/6/division/6.1 (the official version)
Page: https://openlegislation.uk/eu-directive-1983-514/annex/division-13/division-6/division-6.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.