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Standard Code | Standard Title | Standard Class | Order |
---|---|---|---|
GB/T 4333.7-1984 |
Methods for chemical analysis of ferrosilicon--The chromatographic separation-barium sulfate gravimetric method for the determination of sulfur content 硅铁化学分析方法 色层分离硫酸钡重量法测定硫量 |
China National Standards chromatograp |
English PDF |
GB/T 3654.1-1983 |
Methods for chemical analysis of ferroniobium--The paper chromatograph-gravimetric method for the determination of niobium and tantalum content 铌铁化学分析方法 纸上色层分离重量法测定铌、钽量 |
China National Standards chromatograp |
English PDF |
GB/T 3653.5-1983 |
Methods for chemical analysis of ferroboron--The chromatographic separation-barium sulfate gravimetric method for the determination of sulfur content 硼铁化学分析方法 色层分离硫酸钡重量法测定硫量 |
China National Standards chromatograp |
English PDF |
GB/T 3144-1982 |
Toluene--Determination of hydrocarbon impurities--Gas chromatographic method 甲苯中烃类杂质的气相色谱测定法 |
China National Standards chromatograp |
English PDF |
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