This International standard specifies the analytical procedure for the determination of silver in silver jewellery alloys with a nominal content of 999 ‰ (parts per thousand) by measuring specific elements listed in Table A.1.
DS/ISO 15096:2008 history
2008DS/ISO 15096:2008 Jewellery - Determination of silver in 999 0/00 silver jewellery alloys - Difference method using inductively coupled plasma optical emission spectroscopy (ICP-OES)