DIN ISO 4531-2-2015 Vitreous and porcelain enamels - Release of lead and cadmium from enamelled ware in contact with food - Part 2 Permissible limits (ISO 4531-2 1998)《釉瓷和搪瓷 与食品接触的.pdf

1、July 2015Translation by DIN-Sprachendienst.English price group 6No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 25.

2、220.50; 67.250!%D b) permissible limits have been specified for tanks with a capacity of over 3 l; c) dolls kitchen utensils have been deleted. Previous editions DIN 51032: 1977-12, 1986-02 3DIN ISO 4531-2:2015-07National Annex NA (informative) Bibliography DIN ISO 4531-1, Vitreous and porcelain ena

3、mels Release of lead and cadmium from enamelled ware in contact with food Part 1: Method of test 4DIN ISO 4531-2:2015-07Vitreous and porcelain enamels Release of lead and cadmium from enamelled ware in contact with food Part 2: Permissible limits IntroductionThe problem of lead and cadmium release f

4、rom enamelled ware requires effective means of control to ensure theprotection of the population against possible hazards arising from the use of improperly formulated, applied andfired enamels and/or decorations on the food contact surfaces of enamelled ware used for the preparation, servingand sto

5、rage of foodstuffs.As a secondary consideration, different requirements from country to country for the control of the release of toxicmaterials from the surfaces of enamelled ware present non-tariff barriers to international trade in thesecommodities. Accordingly, there is a need to establish inter

6、nationally accepted permissible limits for the release oflead and cadmium from enamelled ware.An expert panel convened by the World Health Organization (WHO) met in Geneva, in June 1976, andrecommended the adoption of sampling methods, testing procedures and limits for the release of toxic materials

7、from ceramic ware 3. A further meeting was convened by the WHO in November 1979 4.The permissible limits given in this International Standard are based on those WHO recommendations, because itwas the sense of the WHO meeting that the term “ceramic“ includes ceramics, glass, vitreous enamels and glas

8、sceramics. However, the permissible limits have been reduced. As the capability of the industry increases, furtherefforts will be made to reduce these limits for lead and cadmium release.If WHO recommendations were to include hot testing at any time then a new edition of this part of ISO 4531 should

9、be considered. For the time being the cold test is also applied for cookware with reduced limit values compared withthose specified for other foodware 5.5DIN ISO 4531-2:2015-071 ScopeThis part of ISO 4531 specifies permissible limits for the release of lead and cadmium from enamelled wareintended fo

10、r use in contact with food (including drinks).This part of ISO 4531 is applicable to enamelled foodware including tanks and vessels which are intended to beused for the preparation, serving and storage of food.This part of ISO 4531 also specifies permissible limits for the release of lead and cadmiu

11、m from a drinking rim.It is not applicable to ceramic ware, nor to glassware and glass ceramic ware.2 Normative ReferenceThe following normative document contains provisions which, through reference in this text, constitute provisions ofthis part of ISO 4531. For dated references, subsequent amendme

12、nts to, or revisions of, this publication do notapply. However, parties to agreements based on this part of ISO 4531 are encouraged to investigate the possibilityof applying the most recent edition of the normative document indicated below. For undated references, the latestedtion of the normative d

13、ocument referred to applies. Members of ISO and IEC maintain registers of currently validInternational Standards.ISO 4531-1,Vitreous and porcelain enamels Release of lead and cadmium from enamelled ware in contact withfood Part 1: Method of test.3 DefinitionsFor the purposes of this part of ISO 4531

14、 the definitions specified in ISO 4531-1 apply.4 Permissible limits4.1 GeneralA vitreous or porcelain enamelled article shall be recognized as satisfying the requirements of this part of ISO 4531if the quantities of lead and/or cadmium when determined by the method specified in ISO 4531-1 do not exc

15、eed thepermissible limits given in 4.2 to 4.4.However, where a vitreous and porcelain enamelled article does not exceed the values given in 4.2 to 4.4 by morethan 50 %, that article shall nevertheless be recognized as satisfying the requirements of this part of ISO 4531 if atleast three other articl

16、es identical to this one in material, shape, dimensions and decoration are tested under theconditions laid down in ISO 4531-1 with the result that the arithmetic mean of lead and/or cadmium release for thosearticles does not exceed the permissible limits and none of those articles exceeds the permis

17、sible limits by morethan 50 %.6DIN ISO 4531-2:2015-074.2 Enamelled wareTable 1 Permissible limits of the lead and cadmium release from enamelled ware in contactwith foodType of enamelled ware Maximum lead release Maximum cadmium releasemg/dm2mg/lmg/dm2mg/lFoodwarewithoutcook wareFlatware 0,8 0,07Hol

18、low ware(up to 3 l)0,8 0,07Cook wareFlatware 0,1 0,05Hollow ware(up to 3 l)0,4 0,07Tanks and vessels (capacityover 3 l) tested by flat specimen0,1 0,05NOTE The values given in table 1 are expressed in milligrammes per square decimetre of the referencesurface area for flatware and in milligrammes per

19、 litre of extraction solution for hollow-ware.4.3 Drinking rimWhen the drinking rim is tested as specified in ISO 4531-1, enamelled articles shall not cause the substances givenin table 2 to be released into the test solution in quantities exceeding those stated.Table 2 Permissible limits for drinki

20、ng rimLead Cadmiummg per article mg per article2,0 0,204.4 Receptacles with lidIf a receptacle is provided with a lid, the receptacle alone and the inner surface of the lid shall each be tested on itsown according to ISO 4531-1. The sum of the two extraction values calculated in milligrammes for lea

21、d and/orcadmium shall be related, depending on the case concerned, to the surface area or to the volume of the receptaclealone. The permissible limit for the lead and/or cadmium release, in milligrammes per square decimetre or inmilligrammes per litre, shall be deemed to be the value applying to the

22、 receptacle alone.7DIN ISO 4531-2:2015-07Bibliography1 ISO 6486-2:1986, Ceramic ware, glass-ceramic ware and glass flat ware in contact with food Release of leadand cadmium Part 2: Permissible limits.2 ISO 7086-2:1982, Glass hollow ware in contact with food Release of lead and cadmium Part 2: Permis

23、siblelimits.3 WHO/Food Additives 77.44. Ceramic Foodware Safety, Sampling, Analysis and Limits for Release (Report of aWHO meeting, Geneva, 8 10 June 1976).4 WHO/Food Additives HCS/79.7. Ceramic Foodware Safety, Critical Review of Sampling, Analysis and Limitsfor Lead and Cadmium Release (Report of

24、a WHO meeting, Geneva, 12 14 November 1979).5 FREY, E., and SCHOLZE, H., Blei- und Cadmiumlssigkeit von Schmelzfarben, Glasuren und Emails in Kontaktmit Essigsure und Lebensmitteln und unter Lichteinwirkung Lead and cadmium release from fused colours,glazes and enamels in contact with acetic acid and foodstuffs and under the influence of light. BerichtDeutsche Keramische Gesellschaft, 1979 (vol. 56), pp. 293-297.8DIN ISO 4531-2:2015-07