Klenoty - Stanovení stříbra v klenotnických slitinách stříbra - Volumetrická (potenciometrická) metoda s použitím bromidu draselného (Norma k přímému použití jako ČSN).

The information about the standard:

Designation standards: ČSN EN ISO 11427
Classification mark: 420656
Catalog number: 501587
Publication date standards: 1.4.2017
The number of pages: 20
Approximate weight : 60 g (0.13 lbs)
Country: Czech technical standard
Kategorie: Technické normy ČSN

Annotation of standard text ČSN EN ISO 11427 (420656):

This International Standard method describes a volumetric method for the determination of silver in jewellery alloys, preferably within the range of fineness stated in ISO 9202. These alloys may contain copper, zinc, cadmium, and palladium. Apart from palladium, which must be precipitated before commencing titration, these elements do not interfere with this method of determination. This method is intended to be used as the referee method for the determination of fineness in alloys covered by ISO 9202