H68 贵金属及其合金 标准查询与下载
共找到 413 条与 贵金属及其合金 相关的标准，共 28 页
Energy consumption limit per unit product of precious metal smelting in the non-ferrous metal industry
- ICS
- 77.150.99
- CCS
- H68
- 发布
- 2021-05-17
- 实施
- 2021-10-01
This document specifies a cupellation method (fire assay) for the determination of gold on a material considered homogeneous. The gold content of the sample lies preferably between 100 and 999,5 parts per thousand (‰) by weight. Fineness above 999,5 ‰ can be determined using a spectroscopy method by difference (e.g. ISO 15093). The procedure is applicable to most types of gold samples. Some modifications are indicated for specific cases (presence of large amount of base metals, platinum or palladium, silver). It is not compatible with the presence above trace levels of iridium, rhodium and ruthenium (more than 0,25 ‰ for the sum of all three elements). This method is also intended to be used as the recommended method for the determination of fineness in jewellery alloys covered by ISO 9202.
Jewellery and precious metals - Determination of gold - Cupellation method (fire assay)
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- CCS
- H68
- 发布
- 2021-03-00
- 实施
Bis(di-tert-butylphenylphosphine)palladium dichloride
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- 77.150.99
- CCS
- H68
- 发布
- 2020-12-09
- 实施
- 2021-04-01
Diiodo(p-cymene)ruthenium(II)
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- 77.150.99
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- H68
- 发布
- 2020-12-09
- 实施
- 2021-04-01
Platinum matrix for spectroscopic analysis
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- 77.150.99
- CCS
- H68
- 发布
- 2020-12-09
- 实施
- 2021-04-01
[2,2′-bis(diphenylphosphine)-1,1′-binaphthyl]ruthenium dichloride
- ICS
- 77.150.99
- CCS
- H68
- 发布
- 2020-12-09
- 实施
- 2021-04-01
1,3-Bis(diphenylphosphinepropane)palladium dichloride
- ICS
- 77.150.99
- CCS
- H68
- 发布
- 2020-12-09
- 实施
- 2021-04-01
Rhodium matrix for spectroscopic analysis
- ICS
- 77.150.99
- CCS
- H68
- 发布
- 2020-12-09
- 实施
- 2021-04-01
Iridium matrix for spectroscopic analysis
- ICS
- 77.150.99
- CCS
- H68
- 发布
- 2020-12-09
- 实施
- 2021-04-01
Palladium matrix for spectroscopic analysis
- ICS
- 77.150.99
- CCS
- H68
- 发布
- 2020-12-09
- 实施
- 2021-04-01
Dichloro[1,1'-bis(di-tert-butylphosphine)ferrocene]palladium
- ICS
- 77.150.99
- CCS
- H68
- 发布
- 2020-12-09
- 实施
- 2021-04-01
Silver Palladium Thick Film Conductor Paste
- ICS
- 77.150.99
- CCS
- H68
- 发布
- 2020-12-09
- 实施
- 2021-04-01
Dichlorodi-tert-butyl-(4-dimethylaminophenyl)phosphine palladium
- ICS
- 77.150.99
- CCS
- H68
- 发布
- 2020-12-09
- 实施
- 2021-04-01
Bis(1,5-cyclooctadiene)rhodium tetrafluoroborate
- ICS
- 77.150.99
- CCS
- H68
- 发布
- 2020-12-09
- 实施
- 2021-04-01
