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  1. Home
  2. ISO 11426:1997

ISO 11426:1997 Historical

714870

Determination of gold in gold jewellery alloys -- Cupellation method (fire assay)

standard by International Organization for Standardization , 12/01/1997

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Identical Versions Available

  • BS EN ISO 11426:1999

    March 1999
    Determination of gold in gold jewellery alloys. Cupellation method (fire assay)

    • Historical Version

Full Description

This International Standard specifies a cupellation method (fire assay) for the determination of gold in gold jewellery alloys. The gold content of the alloys should preferably lie between 333 and 999 parts per thousand (‰).

The procedure is applicable specifically to gold alloys incorporating silver, copper and zinc. Some modifications are indicated where nickel and/or palladium are present in the so-called white gold alloys, as well as for alloys containing 990 or more parts per thousand (‰) of gold.

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

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Document History

  1. ISO 11426:2021

    March 2021
    Jewellery and precious metals - Determination of gold - Cupellation method (fire assay)

    • Most Recent  Most Recent
  2. ISO 11426:2014

    December 2015
    Jewellery - Determination of gold in gold jewellery alloys - Cupellation method (fire assay)

    • Historical Version
  3. ISO 11426:1997

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    viewing

    December 1997
    Determination of gold in gold jewellery alloys -- Cupellation method (fire assay)

    • Historical Version

Browse related products from International Organization for Standardization

  • International Organization for Standardization > By ICS Code > 39: Precision mechanics. Jewellery > 39.060: Jewellery
  • International Organization for Standardization > By Technical Committee > TC 174: Jewellery

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Price: $66.00
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Product Details

Published:

12/01/1997

Number of Pages:

7

File Size:

1 file , 89 KB

Same As:

BS EN ISO 11426:1999

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