# 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 6.2: Concentration of nkromethane in the sample

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

If ‘n’ represents nitromethane:
let:
kn its response factor,
Sn its peak area.
If ‘c’ represents the internal standard, chloroform or 2,4-dimethylheptane:
let:
mc its mass (in grans) in the mixture,
Sc its peak area,
M the mass (in grams) of the aerosol transferred,
then the % (m/m) nitromethane in the sample is:
m c M × K n × S n S c × 100

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Source: https://www.legislation.gov.uk/eudr/1983/514/annex/division/13/division/6/division/6.2 (the official version)
Page: https://openlegislation.uk/eu-directive-1983-514/annex/division-13/division-6/division-6.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.