DIN Standards Committee Optics and Precision Mechanics
DIN EN ISO 11427
Jewellery and precious metals - Determination of silver - Potentiometry using potassium bromide (ISO 11427:2024); German version EN ISO 11427:2024
Schmuck und Edelmetalle - Bestimmung von Silber - Potentiometrie unter Verwendung von Kaliumbromid (ISO 11427:2024); Deutsche Fassung EN ISO 11427:2024
Overview
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 (for example, ISO 15096). This method is intended to be used as the reference method for the determination of fineness in alloys covered by ISO 9202. This method is intended to be used as the referee method for the determination of fineness in alloys covered by ISO 9202. The responsible national standardization committee is Working Committee NA 027-04-04 AA "Analysenmethoden zur Bestimmung des Feingehalts von Edelmetallen" ("Methods of analysis for determination of fineness of precious metals") at DIN Standards Committee Optics and Precision Mechanics (NAFuO).
Responsible national committee
NA 027-04-04 AA - Methods of analysis for determination of fineness of precious metals
Responsible european committee
CEN/TC 410 - Jewellery and precious metals
