GB/T 223.56-1987 Methods for chemical analysis of iron,steel and alloy--The sulfhydryl cotton fiber separation-oscillopolarographic method for the determination of tellurium content (English Version)
This standard is applicable to the determination of tellurium content in steel, high, medium and low alloy steel and high temperature alloy. Measuring range: 0.00004 ~ 0.001%. This standard complies with GB1467-78 "General Rules and General Provisions of Standards for Chemical Analysis Methods of Metallurgical Products".
GB/T 223.56-1987 history
2008GB/T 223.55-2008 Iron, steel and alloy. Determination of tellurium content. Oscillo-polarographic method
1987GB/T 223.56-1987 Methods for chemical analysis of iron,steel and alloy--The sulfhydryl cotton fiber separation-oscillopolarographic method for the determination of tellurium content
GB/T 223.56-1987 Methods for chemical analysis of iron,steel and alloy--The sulfhydryl cotton fiber separation-oscillopolarographic method for the determination of tellurium content was changed to GB/T 223.55-2008 Iron, steel and alloy. Determination of tellurium content. Oscillo-polarographic method.