GB/T 223.78-2000 Methods for chemical analysis of iron,steel and alloy-Curcumin spectrophotometric method for the determination of boron content (English Version)
This standard specifies the curcumin direct photometric method for the determination of boron content in steel. This method is applicable to the determination of 0.0005% (m/m) ~ 0.012% (m/m) in steel and 0.0001% (m/m) ~ 0.0005% (m/m) boron content in non-alloy steel.
GB/T 223.78-2000 history
2000GB/T 223.78-2000 Methods for chemical analysis of iron,steel and alloy-Curcumin spectrophotometric method for the determination of boron content