HG/T 5744-2020
GB/T 535-2020
Fertilizer grade ammonium sulphate
GB/T 26519.3-2021
Persulfate for industrial use—Part 3:Ammonium persulfate for industrial use
HG/T 2784-2023
GB/T 32784-2016
Pig iron contenting nickel—Determination of chromium content—Ammonium per sulfate-ammonium ferrous sulfate titration method
GB/T 1396-2015
Chemical reagent—Ammonium sulfate
HG/T 2784-2012
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/T 655-2011
Chemical reagent - Ammonium persulfate
GB/T 6276.4-2010
Determination of ammonium hydrogen carbonate for industrial use—Part 4:Sulphate content—Visible turbidimetric method
KS M ISO 3332-2017
Ammonium sulphate for industrial use — Determination of ammoniacal nitrogen content — Titrimetric method after distillation
KS M ISO 3332-2017(2022)
Ammonium sulphate for industrial use — Determination of ammoniacal nitrogen content — Titrimetric method after distillation
KS M ISO 2992-2017(2022)
Ammonium sulphate for industrial use — Determination of iron content — 2,2'-bipyridyl photometric method
HG/T 5907-2021
Ammonium sulphate of dyes by-product
GB/T 23939-2009
Ammonium persulfate for industrial use
KS M ISO 2992-2017
Ammonium sulphate for industrial use — Determination of iron content — 2,2'-bipyridyl photometric method
QB/T 2573-2016
Ammonium lauryl sulfate
YB/T 4908.1-2021
Vanadium-aluminum alloy-Determination of vanadium content-Ammonium persulfate oxidation-ammonium ferrous sulfate titrimetric method
GB/T 6276.4-1986
Ammonium hydrogen carbonate for industrial use—Determination sulphate content—Visible turbidimetric method
\u0413\u041e\u0421\u0422 29336-92
Ammonium sulphate for industrial use. Determination of free acid content. Titrimetric method