YS/T 240.4-2007 Methods for chemical analysis of bismuth concentrate. Determination of tungsten trioxide content. Thiocyanate spectrophotometric method (English Version)
This section specifies the method for determination of the amount of tungsten trioxide in bismuth concentrate. This section applies to the determination of the amount of tungsten trioxide in bismuth concentrate. Measuring range: 0.01% ~ 5.00%.
YS/T 240.4-2007 history
2007YS/T 240.4-2007 Methods for chemical analysis of bismuth concentrate. Determination of tungsten trioxide content. Thiocyanate spectrophotometric method