Commission Directive of 8 July 1980 laying down the Community method of analysis for the official control of the vinyl chloride monomer level in materials and articles which are intended to come into contact with foodstuffs (80/766/EEC) (repealed)

6.1. Find by interpolation on the curve, the unknown concentration of each of the two solutions of the sample taking account of the internal standard solution if used. Calculate the amount of VC in each of the two samples of material or article under investigation by applying the following formula:

where:

X

=

concentration of VC in the sample of the material or article expressed in mg/kg.

C

=

concentration of VC in the phial containing the sample of material or article (see under point 5.5) expressed in mg/l or mg/kg.

V

=

volume or mass of DMA in the phial containing the sample of material or article (see under point 5.5) expressed in litres or kg.

M

=

amount of the sample of the material or article, expressed in grams.