The analytical composition of a water which is the subject of a numerical description appearing on packaging, labels and in advertising is not different from that presented by the water to which the said description refers. However, differences in the composition of a natural mineral water resulting from natural fluctuations which do not affect the stability of the essential characteristics of the water are not considered to be differences within the meaning of this article.
Any container used for the packaging of natural mineral waters shall be fitted with a closing device designed to prevent any possibility of falsification or contamination.