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8391/1 International Standard (ISO INTERNATIONALORGANIZATION FOR STANDARDIZATIONMEKAYHAPOAHAA OPTAHW3AUMA NOCTAHAAPTW3AUMM+ORGANISATION INTERNATIONALEDENORMALISATION ANSI Ceramic cookware in contact with food - Release of lead and cadmium Part 1 : Method of test Articles de cuisson en ceramique en contact avec les aliments --- Emission de plomb et de cadmium -- Partie 1 : Methode d'essai First edition -- 1986-12-01 SO8391/1-1986 (E) UDC 642.72:666.5 : 614.3 Ref.No.ISO 8391/1-1986(E) Descriptors:food-container contact,ceramics,kitchen utensils, tests,determination of content, solublematter,lead, cadmium. Price based on 4 pages Foreword ISo (the International Organization for Standardization) is a worldwide federation of national standards bodies (IsO member bodies). The work of preparing International Standards is normally carried out through Iso technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with IsO, aiso take part in the work. Draft International Standards adopted by the technicai committees are circulated to the member bodies for approval before their acceptance as International Standards by the Iso Council. They are approved in accordance with IsO procedures requiring at least75%approvalbythememberbodiesvoting. International Standard Iso 8391/1 was prepared by Technical Committee ISo/Tc 166, Ceramic ware, glassware and glass ceramic ware in contact with food. and that any reference made herein to any other International Standard implies its latest edition, unless otherwise stated. International Organization for Standardization, 1986 Printed inSwitzerland No reproduction or networking permitted without license from IHS Not for Resale ISO8391/1-1986 (E) INTERNATIONAL STANDARD Ceramic cookware in contact with food - Release of lead and cadmium Part 1 : Method of test 0 Introduction 3 References Iso 3585, Glass plant, pipeline and fittings - Properties of The problems of lead and cadmium release from cookware require effective means of control to ensure the protection of borosilicate glass 3.3. the population against a possible health hazard. This potential arises when improperly formulated, applied or fired glazes are ISO6955, Analytical spectroscopicmethods Flame applied to cookware. There is a particular concern for cookware emission, atomic absorption and atomic fluorescence because the normal conditions of use (heating acid foods for Vocabulary. prolonged periods) are conducive to the extraction of soluble lead and cadmium intofood. 4 Definitions As a secondary consideration, the varying standards for cookware that exist from country to country present non-tariff For the purpose of this part of Iso 8391, the following definitions apply. barriers to international trade.Accordingly,there is a need to establishinternationallyacceptedmethodsoftestingcookware forlead and cadmiumrelease;and todefinepermissible limits 4.1 ceramic cookware : Ceramic articles which are for the extraction of these toxic metals. intended to be heated in the preparation of foodstuffs, for example china, porcelain and earthenware, but excludes giass, An expert panei convened by the World Health Organization glass ceramic and porcelain enamel articles. (WHO) met (with ISO participation) in Geneva, in November 1979,andrecommendedlimitsforthereleaseoftoxicmaterials 4.2 extraction solution : The solvent used in the test to fromceramic cookwareforaproposed hot testmethod. extract lead and cadmium from cookware. Further,the meeting directed that the proposed method be further studied determine its repeatability and reproducibility. The method specified in this part of iso 8391 is based on the WHO recommendations and subsequent 5Principle collaborative studies in which 14 laboratories throughout the USA, Europe and Japan participated. Extraction of lead and cadmiu

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