
Determination Of Gold In Gold Jewellery Alloys - Cupellation Method (fire Assay)
出版:Italian Standards

專家解讀視頻
Defines a cupellation method (fire assay) determining gold in gold jewellery alloys. The content should lie between 333 and 999 parts per thousand (0/00). Applicable to specify gold alloys incorporating zinc, copper and silver. Modifications are indicated where nickel and/or palladium are present in so-called white gold alloys, as well as for alloys containing 990 or more parts per thousand (0/00) of gold.
Supersedes UNI EN 31426. (12/2000)
NEN EN ISO 11426:1999 - Identical
ISO 11426:1997 - Identical
SS EN ISO 11426 Ed. 1 (1999) - Identical
UNE EN ISO 11426:1999 - Identical
NS EN ISO 11426 Ed. 2 (1999) - Identical
I.S. EN ISO 11426:1999 - Identical
NBN EN ISO 11426:1999 - Identical
NF EN ISO 11426:1999 - Identical
ONORM EN ISO 11426:1999 - Identical
DIN EN ISO 11426 (1999-10) - Identical
BS EN ISO 11426:1999 - Identical
SN EN ISO 11426:1999 - Identical
EN ISO 11426:2016 - Identical
NEN EN ISO 11426:2016 - Identical
BS EN ISO 11426:2016 - Identical
SS EN ISO 11426 Ed. 2 (2016) - Identical