GB 223.47-1985 methods for chemical analysis of iron,steel and alloy--The carrier precipitation-molybdenum blue photometric method for the determination of antimony content (English Version)
1994GB/T 223.47-1994 Methods for chemical analysis of iron,steel and alloy. The carrier precipitation-molybdenum blue potometric method for the determination of antimony content
1985GB 223.47-1985 methods for chemical analysis of iron,steel and alloy--The carrier precipitation-molybdenum blue photometric method for the determination of antimony content
GB 223.47-1985 methods for chemical analysis of iron,steel and alloy--The carrier precipitation-molybdenum blue photometric method for the determination of antimony content was changed to GB/T 223.47-1994 Methods for chemical analysis of iron,steel and alloy. The carrier precipitation-molybdenum blue potometric method for the determination of antimony content.