GB/T 223.19-1989 Methods for chemical analysis of iron,steel and alloy--The neocuproine-chloroform extraction photometric method for the determination of copper content (English Version)
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
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GB/T 223.19-1989
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GB 223.19-1982
Scope
This standard stipulates the determination of copper content by the new cuproine-chloroform extraction spectrophotometry. This standard is applicable to the determination of copper content in pig iron, carbon steel, alloy steel, superalloy and precision alloy. Measuring range: 0.010% to 100%.
GB/T 223.19-1989 history
1989GB/T 223.19-1989 Methods for chemical analysis of iron,steel and alloy--The neocuproine-chloroform extraction photometric method for the determination of copper content