6.2 Initial verification

The conformity of vessels used for commercial transactions to the prescribed specifications shall be controlled by the competent authority using a suitable statistical test. The controls shall preferably take place at the manufacturer’s plant or at the importer’s warehouse.

The competent authority shall use a suitable test to perform the controls. An example is given in Annex A. In cases where a small number of vessels are concerned, the control may be replaced by individual initial verification.

Casks may be presented to the competent authority for legal metrology without an indication of the nominal capacity. In this case, the authority shall determine the conventional true capacity at a reference temperature when the container is filled according to the specifications and shall affix the value of the nominal capacity and the official mark of verification.

Capacity serving measures may be presented to the competent Legal Metrology Authority without marking. In this case, the authority shall affix the gauge mark, the value of the nominal capacity and the official verification mark.