This document specifies methods for measuring overall migration of plastic materials and articles intended to come into contact with foodstuffs by contacting test specimens with evaporable food simulants at temperatures greater than or equal to 4 °C and not exceeding the reflux temperature. The overall migration from a sample of the plastics is determined as the loss in mass of non-volatile substances expressed: per unit surface area, or per kg of food simulant, or per article; after contact with a food simulant under defined conditions. According to the type of materials or articles, contacting with the food simulant is carried out on a single surface (pouch, cell, filling) or by immersion. This document does not cover the interpretation of the results which is expected to account for regulatory requirements.