GB/T 664-2011
Chemical reagent - Iron(Ⅱ)sulfate heptahydrate
GB/T 24583.1-2019(\u82f1\u6587\u7248)
钒氮合金 钒含量的测定 硫酸亚铁铵滴定法
GB 34465-2017
Feed additive—Ferrous sulphate
GB/T 10531-2016
Water treatment chemicals—Ferrous sulphate
GB/T 6730.8-2016(\u82f1\u6587\u7248)
铁矿石 亚铁含量的测定 重铬酸钾滴定法
GB/T 4702.1-2016
Chromium metal—Determination of chromium content—The ammonium ferrous sulfate titrimetric method
GB/T 24583.1-2019
Vanadium-nitrogen—Determination of vanadium content—Ammonium ferrous sulfate titration method
GB/T 6730.32-2013
Iron ores - Determination of vanadium content - The ammonium ferrous sulfate titrimetric method
GB/T 32784-2016
Pig iron contenting nickel—Determination of chromium content—Ammonium per sulfate-ammonium ferrous sulfate titration method
GB/T 661-2011
Chemical reagent - Ammonium iron(II) sulfate hexahydrate
GB/T 8704.5-2020
Ferrovanadium—Determination of vanadium content—The ammonium ferrous sulfate titrimetric method and the potentiometric titrimetric method
HG/T 2935-2006
Feed grade ferrous sulfate
YS/T 807.4-2012
Chemical analysis methods of aluminum hardeners—Part 4:Determination of chromium content—The ammonium persulfate oxidation-ammonium ferrous sulfate titrimetric method
YS/T 807.13-2012
Chemical analysis methods of aluminum hardeners—Part 13:Determination of vanadium content—Ferrous ammonium sulfate titrimetric method
20230843-T-607
Fireworks—Test methods for determination of specific chemical substances—Part 10:Nitrogen content in nitrocellulose by iron(II) sulphate titration
GB/T 1506-2016
Manganese ores—Determination of manganese content—Potentiometric method and ammonium iron(Ⅱ) sulphate titrimetric method
HG 2935-2000
Feed grade ferrous sulfate
YB/T 4566.3-2016
Ferrovanadium nitride-Determination of vanadium content-Ammonium ferrous sulfate titrimetric method
GB/T 6730.9-2016
Iron ores—Determination of silicon content—The silicomolybdic blue spectrophotometric method reduced by ammonium ferrous sulfate
YB/T 4908.1-2021
Vanadium-aluminum alloy-Determination of vanadium content-Ammonium persulfate oxidation-ammonium ferrous sulfate titrimetric method