Prepackages covered by this Directive shall be made up in such a way that the completed packages satisfy the following requirements:
1.1. the actual contents shall not be less, on average, than the nominal quantity ...
In all operations for checking quantities of products expressed in units of volume, the value employed for the actual contents shall be measured at or corrected to a temperature of 20 °C, whatever the temperature at which packaging or checking is carried out. However, this rule shall not apply to deep frozen or frozen products, the quantity of which is expressed in units of volume. ...
The negative error of a prepackage is the quantity by which the actual contents of the prepackage are less than the nominal quantity.
