UNE EN 31426:1996被替代
Determination Of Gold In Gold Jewellery Alloys - Cupellation Method (fire Assay)
出版：Asociacion Espanola de Normalizacion
專家解讀視頻
Specifies a cuppellation method (fire assay) for the determination of gold in gold jewellery alloys. Applies specifically to gold alloys incorporating silver, copper and zinc. Coverage includes reagents, procedure, and notes on procedure.
NF EN 31426:1994 - Identical
SN EN 31426:1994 - Identical
DIN EN 31426 (1994-09) - Identical
BS EN 31426:1994 - Identical
I.S. EN 31426:1994 - Identical
SS EN 31426:1994 - Identical
ISO 11426:1997 - Identical
