In March 2023, ISO (International Organization for Standardization) published an amendment to the toy standard ISO 8124-3:2020 on migration of certain elements, to be ISO 8124-3:2020+Amd.1:2023. The amendment shall be effective immediately.

Compared to the previous version, ISO 8124-3:2020+Amd.1:2023 includes following major changes:

1.For modelling clay:

1. Added migration limit for boron (B) (3750 mg/kg);
2. Changed migration limit for barium (Ba) from 250 mg/kg to 350 mg/kg.

2.For putty:

1. Added migration limit for boron (B) (3750 mg/kg);
2. Lowered migration limit for four elements (Ba, Cd, Cr, Hg) to be those for modelling clay.

3.For slime:

1.  Added migration limit for boron (B) (1250 mg/kg);
2.  Lowered migration limits for eight elements (Sb, As, Ba, Cd, Cr, Pb, Hg, Se) to be those for finger paint.

As a result, migration limits for elements are as below:

Maximum acceptable element migration from toy materials (ISO 8124-3:2020+Amd.1:2023)

Modelling clay and putty are defined as flexible solid or semi-solid mixtures that retain their shape and form when moulded into a shape, intended to create representations of objects by hand manipulation or to be extruded into profiles by the toy. Slime is defined as water-based gel or gel like material, clear or coloured, which is viscous, slippery, and often non-Newtonian fluids, intended for play by hand manipulation, kneading and stretching.

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