The labelling of prepackages and their contents must indicate the weight or volume they contain in a harmonised way and under specific metrological conditions. There are 2 major pieces of legislation on standardised filling in this sector: on filling packages and on glass bottles. Both laws are widely applied in the EU and fully recognised by national authorities.
See the summary of the legislation in different languages.
The legislation was evaluated by the Commission on 4 July 2016:
Under Directive 76/211/EEC packers and importers have the option to fill prepackages according to a standardised method. Such pre-packed products can then be freely marketed throughout the EU. They are recognisable by the large e-mark on the label or packaging, next to the indication of quantity (volume or weight).
Directive 75/107/EEC offers manufacturers the option to produce harmonised glass bottles used as measuring containers. This is indicated on the bottom of such bottles with a reversed epsilon marking (“З”) next to the indication of quantity (volume).
Following its 2005 consultation of stakeholders – and subsequent discussion in the WELMEC – the Commission concluded that no further changes in EU law were needed, because the issues identified could be dealt with by guidance.