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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 39138.1-2020 |
Methods for chemical analysis of gold nickel chromium iron silicon boron alloys—Part 1：Determination of gold content—Potentiometric titration using ferrous sulfate 金镍铬铁硅硼合金化学分析方法 第1部分：金含量的测定 硫酸亚铁电位滴定法 |
China National Standards Determination ferrous iron |
 English PDF |
| GB/T 8454-2020 |
Reduced ilmenite powder for welding rob—Determination of ferrous iron content—Potassium dichromate titrimetric method 焊条用还原钛铁矿粉 亚铁含量的测定 重铬酸钾滴定法 |
China National Standards Determination ferrous iron |
English PDF |
| GB/T 6730.9-2016 |
Iron ores—Determination of silicon content—The silicomolybdic blue spectrophotometric method reduced by ammonium ferrous sulfate 铁矿石 硅含量的测定 硫酸亚铁铵还原-硅钼蓝分光光度法 |
China National Standards Determination ferrous iron |
English PDF |
| GB 5009.249-2016 |
National Food Safety Standard - Determination of ferrous sodium ethylenediaminetetraacetate in iron fortified soy sauce 食品安全国家标准 铁强化酱油中乙二胺四乙酸铁钠的测定 |
China National Standards Determination ferrous iron |
English PDF |
| GB/T 32784-2016 |
Pig iron contenting nickel—Determination of chromium content—Ammonium per sulfate-ammonium ferrous sulfate titration method 含镍生铁 铬含量的测定 过硫酸铵-硫酸亚铁铵滴定法 |
China National Standards Determination ferrous iron |
English PDF |
| GB/T 6730.32-2013 |
Iron ores - Determination of vanadium content - The ammonium ferrous sulfate titrimetric method 铁矿石 钒含量的测定 硫酸亚铁铵滴定法 |
China National Standards Determination ferrous iron |
English PDF |
| GB/T 6730.9-2006 |
Iron ores - Determination of silicon contents - The silicomolybdic blue spectrophotometric method reduce by ammonium ferrous sulfate 铁矿石 硅含量的测定 硫酸亚铁铵还原-硅钼蓝分光光度法 |
China National Standards Determination ferrous iron |
English PDF |
| GB/T 223.13-2000 |
Methods for chemical analysis of iron，steel and alloy--The ammonium ferrous sulfate titrationmethod for the determination of vanadium content 钢铁及合金化学分析方法 硫酸亚铁铵滴定法测定钒含量 |
China National Standards Determination ferrous iron |
English PDF |
| GB/T 8454-1987 |
Determination of ferrous iron contentin reduced ilmenite powder for welding rod 焊条用还原钛铁矿粉中亚铁量的测定 |
China National Standards Determination ferrous iron |
English PDF |
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