Over deze norm
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This part of the European Standard EN 71 specifies requirements for the maximum amount of certain substances and preparations used in experimental sets for chemistry and related activities. These substances and preparations are chemicals classified as dangerous by the Directives on dangerous substances  and dangerous preparations  (including substances which have been self-classified according to the requirements of these Directives), substances and preparations which in excessive amounts may harm the health of the children using them but which are not classified as dangerous by the above mentioned Directives and any other chemical substances and preparations delivered with the toy. This standard applies to chemistry sets and supplementary sets. It also covers toys for experiments within the fields of mineralogy, biology, physics, microscopy and environmental science whenever they contain one or more chemical substances and/or preparations. It also specifies requirements for marking, contents list, instructions for use and for equipment intended for carrying out the experiments. Other chemical toys are specified in EN 71-5.