Vitreous and porcelain enamels - Release from enamelled articles in contact with food - Methods of test and limits (ISO 4531:2022)

This document outlines the technical specifications for evaluating the release of substances from enamel products intended for contact with food. It establishes standardized testing procedures and defines maximum allowable limits for such releases to ensure consumer safety. The approach described covers various materials including glass, enamel, and ceramic coatings, focusing specifically on the migration of harmful components into food simulants. By adhering to the defined protocols, manufacturers and testing laboratories can verify that these materials meet required safety thresholds. The methodology is designed to be reproducible and applicable across different types of food contact applications involving enamel ware. This specification aligns with international requirements for assessing chemical migration from coated surfaces in kitchenware and similar items. It provides a clear framework for conducting controlled experiments to measure potential leaching under specific conditions. The content serves as a reference for ensuring compliance with safety regulations related to materials that may interact directly with consumed products.