Standard Code | Standard Title | Standard Class | Order |
---|---|---|---|
GB/T 3654.6-2008 |
Ferroniobium - Determination of sulfur content - Combustion-iodate titrimetric method,methylene blue photometric method and infrared absorption method 铌铁 硫含量的测定 燃烧碘量法、次甲基蓝光度法和红外线吸收法 |
China National Standards method,methylene |
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