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ISO/PRF 4531

Vitreous and porcelain enamels — Release from enamelled articles in contact with food — Methods of test and limits

General information

50.00   Final text received or FDIS registered for formal approval   Aug 3, 2026

ISO

ISO/TC 107 Metallic and other inorganic coatings

International Standard

25.220.50   Enamels | 67.250   Materials and articles in contact with foodstuffs | 97.040.60   Cookware, cutlery and flatware

Scope

This document specifies a simulating method of test for determination of the release of metal-ions from enamelled articles, which are intended to come into contact with food.
This document also specifies limits for the release of metal-ions from enamelled articles, which are intended to come into contact with food.
This document is applicable to enamelled articles, including tanks and vessels, which are intended to be used for the preparation, cooking, serving and storage of food.

Life cycle

PREVIOUSLY

PUBLISHED
ISO 4531:2022

NOW

IN_DEVELOPMENT
ISO/PRF 4531
50.00 Final text received or FDIS registered for formal approval
Aug 3, 2026