Reference test method for release of nickel from all post assemblies which are inserted into pierced parts of the human body and articles intended to come into direct and prolonged contact with the skin— 34 стр.
39.060 Jewellery. Including precious metals, precious and semi-precious stones / Ювелирное дело. Включая драгоценные металлы, драгоценные и полудрагоценные камни
