GB 223.27-1984 Methods for chemical analysis of iron,steel and alloy--The thiocyanate-butyl acetate extraction photometric method for the determination of molybdenum content (English Version)
2008GB/T 223.26-2008 Iron,steel and alloy.Determination of molybdenum content.The thiocyanate spectrophotometric method
1994GB/T 223.27-1994 Methods for chemical analysis of iron, steel and alloy.The thiocyanate-butyl acetate extraction spectrophotometric method for the determination of molybdenum content
1984GB 223.27-1984 Methods for chemical analysis of iron,steel and alloy--The thiocyanate-butyl acetate extraction photometric method for the determination of molybdenum content
GB 223.27-1984 Methods for chemical analysis of iron,steel and alloy--The thiocyanate-butyl acetate extraction photometric method for the determination of molybdenum content was changed to GB/T 223.27-1994 Methods for chemical analysis of iron, steel and alloy.The thiocyanate-butyl acetate extraction spectrophotometric method for the determination of molybdenum content.