GB/T 21198.1-2007 standard english preview version PDF file download
GB Standard Code
GB/T 21198.1-2007
Standard Category
China National Standards
GB Standard English Title
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
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