GB/T 18303-2008
钻石色级目视评价方法
Color grading of polished diamond by visual matching
- 实施日期
- 2008-11-01
- ICS 分类
- 39.060
组合使用关键词、标准类型、状态与 ICS 分类,快速定位所需国家标准。
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GB/T 18303-2008
Color grading of polished diamond by visual matching
GB/T 21198.6-2007
Determination of precious metals in precious metals jewellery alloys - Method using ICP spectrometry - Part 6:Difference method
GB/T 21198.5-2007
Determination of precious metals in precious metals jewellery alloys - Method using ICP spectrometry - Part 5:999‰ silver jewellery alloys - Determination of silver - Difference method
GB/T 21198.4-2007
Determination of precious metals in precious metals jewellery alloys - Method using ICP spectrometry - Part 4:999‰ precious metals jewellery alloys - Determination of precious metals - Difference method
GB/T 21198.3-2007
Determination of precious metals in precious metals jewellery alloys - Method using ICP spectrometry - Part 3:Palladium jewellery alloys - Determination of palladium - Method using a solution with yttrium as internal standard element
GB/T 21198.2-2007
Determination of precious metals in precious metals jewellery alloys - Method using ICP spectrometry - Part 2:Platinum jewellery alloys - Determination of platinum - Method using the intensity ratios of all minor constituents with reference to platinum
GB/T 21198.1-2007
Determination of precious metals in precious metals jewellery alloys -Method using ICP spectrometry - Part 1:Platinum jewellery alloys - Determination of platinum - Method using a solution with yttrium as internal standard element
GB/T 9288-2006
Gold jewellery alloys - Determination of gold - Cupellation method (fire assay)
GB/T 14459-2006
Sampling inspection rules by attributes for precious metal adornment
GB/T 19720-2005
Platinum jewellery alloys-Determination of platinum and palladium-Gravimetric method after precipitation of diammonium hexachloroplatinate and dimethylglyoxime
GB/T 19719-2005
Jewellery-Determination of the release of nickel-Method of spectrometry
GB/T 19718-2005
Jewellery-Determination of nickel content-Method of flame atomic absorption spectrometry
GB/T 16554-2003
Diamond grading
GB/T 16552-2003
Gems--Nomenclature
GB/T 18996-2003
Determination of silver in silver jewellery alloys--Volumertic(potentiometric) method using sodium chloride or potassium chloride
GB 11887-2002
Jewellery--Fineness of precious metalalloys and designation