In accordance with current legislation, the metrological requirements for packaged goods are given in the following documents:

• Law of Ukraine “On metrology and metrological activities”;
• Technical regulations regarding some goods that are packaged by mass and volume in ready-made packaging;
• Order No. 969 dated 07/05/2017 “On establishing metrological requirements for packaged goods”.
The above documents contain the following information regarding the designation of units of nominal quantity: On packaged units containing liquid goods, their nominal volume is indicated, and on those containing other goods – their nominal mass, unless otherwise established by law.
The nominal content of a packaged unit is the mass or volume of the product that is indicated on the packaged unit and must be contained in it. The actual content of a packaged unit is the mass or volume of goods actually contained in it. For the purpose of control of the contents of the packaged unit (expressed in units of volume), the values of the actual contents are determined at or brought to a temperature of 20 °C, regardless of the temperature at which the packaging or control was carried out.