GB 28480-2012 sets harmful-element limits for adornments, excluding gems. It includes nickel release limits for piercing and prolonged-skin-contact articles, total-content limits for metal adornments, and soluble-element limits for children’s jewellery. The nickel release provisions are expressed as micrograms per square centimetre per week and are not represented in the µg/kg register. The structured rows transcribe the total-content and soluble-element mg/kg provisions for HMI-controlled metals.
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