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PREN 71-4 : DRAFT 2011被替代
SAFETY OF TOYS - PART 4: EXPERIMENTAL SETS FOR CHEMISTRY AND RELATED ACTIVITIES
出版：Comite Europeen de Normalisation
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標(biāo)準(zhǔn)編號： PREN 71-4 : DRAFT 2011
標(biāo)準(zhǔn)類別：Draft
出版單位：Comite Europeen de Normalisation
標(biāo)準(zhǔn)頁數(shù)：0
標(biāo)準(zhǔn)簡介
Describes requirements for the maximum amount and, in some cases, the maximum concentration of certain substances and mixtures used in experimental sets for chemistry and related activities.
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