GB/T 38812.1-2020
Direct reduced iron—Determination of iron(Ⅱ) content—The potassium dichromate titrimetric method after decomposition of sample by ferric chloride
YB/T 4510-2017
Direct reduced iron-Determination of iron(Ⅱ) content-The potassium dichromate titration after decomposition of sample by ferric chloride
YB/T 159.3-1999
Methods for chemical analysis of titanium concentrate(rock minerals)—The potassium dichromate volumetric method for the determination of ferrous oxide content
HG/T 4200-2011
HG/T 4538-2022
HG/T 4538-2013
Water treatment chemicals-Ferrous chloride
GB/T 6730.8-2016
Iron ores—Determination of iron(II) content—Potassium dichromate titrimetric method
GB/T 6730.71-2014
Iron ores―Determination of acid-soluble iron(II) content―Titrimetric method
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 8454-2020
Reduced ilmenite powder for welding rob—Determination of ferrous iron content—Potassium dichromate titrimetric method
GB/T 6730.32-2013
Iron ores - Determination of vanadium content - The ammonium ferrous sulfate titrimetric method
GB/T 8704.5-2020
Ferrovanadium—Determination of vanadium content—The ammonium ferrous sulfate titrimetric method and the potentiometric titrimetric method
YB/T 4710-2018
GB/T 32784-2016
Pig iron contenting nickel—Determination of chromium content—Ammonium per sulfate-ammonium ferrous sulfate titration method
GB/T 18996-2021
Silver jewellery alloys—Determination of silver—Volumetric(potentiometric) method using sodium chloride or potassium chloride
GB/T 1506-2016
Manganese ores—Determination of manganese content—Potentiometric method and ammonium iron(Ⅱ) sulphate titrimetric method
YB/T 4726.11-2021
Ferric-containing dust and sludge—Determination of iron (Ⅱ) oxide content—Potassium dichromate titrimetric method
YB/T 4566.3-2016
Ferrovanadium nitride-Determination of vanadium content-Ammonium ferrous sulfate titrimetric method
YB/T 159.3-2015
Titanium concentrate (rock minerals) - Determination of ferrous oxide content - The potassium dichromate tirimetric method