The second edition of the BiH standard BAS EN ISO 11427:2025 is a translation of the European Standard EN ISO 11427:2024, Jewellery and precious metals — Determination of silver — Potentiometry using potassium bromide (ISO 11427:2024, IDT).

The original text of the European Standard was prepared by ISO/TC 174, Jewellery and precious metals, in cooperation with CEN/TC 410, Jewellery and precious metals, the secretariat of which is held by DIN.

This document specifies a volumetric method for the determination of silver on a material considered homogeneous. The silver content of the sample lies preferably between (100 and 999.0) parts per thousand (‰) by mass. Fineness above 999.0 ‰ can be determined using a spectroscopy method by difference (e.g. ISO 15096).

This method is intended to be used as a reference method for the determination of fineness in jewellery alloys covered by ISO 9202.

This BiH standard supersedes and replaces BAS EN ISO 11427:2017, Jewellery — Determination of silver in silver jewellery alloys — Volumetric (potentiometric) method using potassium bromide.

The BiH standard BAS EN ISO 11427:2025 was prepared by the Technical Committee BAS/TC 38, Metrology and measurements.