The CEN has published EN 71-4:2020+A1:2025, which covers experimental sets for chemistry and related activities.
Requirement Summary and Effective Dates:
On the April 2nd, 2025, the CEN published EN 71-4:2020+A1:2025 on experimental sets for chemistry and related activities. EN 71-4 specifies requirements on allowed volume and concentrations of chemical substances in these experimental kits. EN 71-4:2020+A1:2025 is expected to be published in the Official Journal of the EU as a harmonized standard under the Toy Safety Directive 2009/48/EC. The date of withdrawal of the previous version was set by the CEN to be on 31 October 2025.
The new amendment alters the requirement for potassium permanganate such that it is no longer allowed to be provided on its own, as potassium permanganate is now categorized as a category 2 reproductive toxicant under Regulation (EC) No. 1272/2008. It also changes the requirement of potassium permanganate in sodium sulfate mixture to only allow 2.5-3% mass fraction. More details on the rationale behind the altered potassium permanganate requirements are explained in Annex A.1.
Additionally, Section 5.2.4.1, which includes requirements for closures of child resistant containers, was modified to introduce test methods different from EN ISO 8317:2015 “Child-resistant packaging - Requirements and testing procedures for reclosable packages”. Three options are now available to assess child resistant containers:
a) comply with EN ISO 8317:2015,
b) closure requires two independent movements to be opened / it remains closed when tested according to closure test A in Annex D.1, or
c) closure is a snap-in stopper to be opened with a specifically designed external tool / it remains closed when tested according to closure test B in Annex D.2.
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