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International Standard Category: Lead, zinc, tin and their alloys

GB/T 12689.5-1990    Zinc and zinc alloys―Determination of silicon content―Molybdenum blue spectrophotometric method
锌及锌合金化学分析方法 钼蓝分光光度法测定硅量 ;
Category No.:77.120.60 Valid Status:abolished
Issued Organization: Issued Date:1990-12-30
Implemented Date:1992-1-1 Abolished Date:2004-10-01
Superseded Standard.:GB/T 12689.8-2004 The methods for chemical analysis of zinc and zinc alloys—The determination of silicon content—The molybdenum blue spectrophotometric method
Superseded Date:2004-10-1
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