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)
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GB/T 223.78-2000
Scope
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