This document gives guidance on the selection of test methods for evaluating the performance of vitreous and porcelain enamelled finishes in different applications. This document references the test methods available for measuring the properties of these finishes and correlates these properties to the requirements of specific enamelled articles. This document is limited for the most part to test methods in ISO documents or European standards but does not provide acceptance criteria or performance limits for the properties. This document is applicable to all enamelled articles, irrespective of their basis metals.