This part of GB/T 6730 specifies a chromium content testing method by the diphenyl carbazide spectrophotometric method.
This method is applicable to natural iron ores, concentrates, sinters and pellets. The concentration range in mass fraction is from 0.010% to 0.500%.
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This part of GB/T 6730 specifies Nitroso-R salt spectrophotometric method for the determination of cobalt in iron ores.
This method is applicable to natural iron ores, concentrates, sinters and pellets.The concentration range in mass fraction is from 0,020% to 0,500%.
定价: 372元 / 折扣价: 317 元 加购物车

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