heavy metalsmeans lead, cadmium, mercury and hexavalent chromium;
incidental presence of heavy metalsmeans the presence of heavy metals as an unintended ingredient of a packaging or packaging component.
intentional introduction of heavy metalsmeans the act of deliberately utilising a substance containing heavy metals in the formulation of a packaging or a packaging component where its continued presence is desired in the final packaging or packaging component to provide a specific characteristic, appearance or quality;