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ANNEX I

ANNEX IIMETHODS OF ANALYSIS FOR DETERMINATION OF THE MIGRATION OF LEAD AND CADMIUM

4.Performance criteria of the instrumental method of analysis

4.1.The detection limit for lead and cadmium must be equal to or lower than:

The detection limit is defined as the concentration of the element in the 4 % acetic acid solution, as referred to in point 3.1, which gives a signal equal to twice the background noise of the instrument.

4.2.The limit of quantification for lead and cadmium must be equal to or lower than:
4.3. Recovery. The recovery of lead and cadmium added to the 4 % acetic acid solution, as referred to in point 3.1, must lie within 80-120 % of the added amount.
4.4. Specificity. The instrumental method of analysis used must be free from matrix and spectral interferences.