GB/T 11198.1-1989
Sulphuric acid for industrial use--Determination of sulphuric acid content and calculation of free sulphur trioxide content of oleum--Titrimetric method
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
KS M ISO 910-2004(2019)
Sulphuric acid and oleum for industrial use-Determination of total acidity, and calculation of free sulphur trioxide content of oleum-Titrimetric method
KS M ISO 3423-2015(2020)
Sulphuric acid and oleums for industrial use-Determination of sulphur dioxide content-Iodometric method
ISO 910:1977
Sulphuric acid and oleum for industrial use — Determination of total acidity, and calculation of free sulphur trioxide content of oleum — Titrimetric method
GB/T 32784-2016
Pig iron contenting nickel—Determination of chromium content—Ammonium per sulfate-ammonium ferrous sulfate titration method
GB/T 5195.18-2018
Fluorspar—Determination of barium sulfate content—Gravimetric method
HG/T 6108-2022
YB/T 6013.1-2022
GB/T 43012-2023
Pulp—Determination of cellulose nanocrystal sulfur and sulfate half-ester content
UNE 55590:1981
SURFACE ACTIVE AGENTS. SULPHURIC ACID AND OLEUMS FOR USE AS RAW-MATERIALS IN DETERGENT FORMULATIONS. DETERMINATION OF SULPHUR DIOXIDE CONTENT. IODOMETRIC METHOD
GB/T 4701.2-2009
Ferrotitanium - Determination of silicon content - The sulphuric acid dehydration gravimetric method
UNE 55592:1981
SURFACE ACTIVE AGENTS. SULPHURIC ACID AND OLEUMS FOR USE AS RAW-MATERIALS IN DETERGENTS FORMULATIONS. DETERMINATION OF TOTAL ACIDITY, AND CALCULATION OF FREE SULPHUR TRIOXIDE CONTENT OF OLEUMS. TITRIMETRIC METHOD
HG/T 2957.4-2004
GB/T 15817-1995
Determination of mineral sulfate content in detergents--Gravimetric method
DB37/T 2735-2015
YB/T 4908.1-2021
Vanadium-aluminum alloy-Determination of vanadium content-Ammonium persulfate oxidation-ammonium ferrous sulfate titrimetric method
DB13/T 1229-2010
KS M ISO 910-2004(2024)
Sulphuric acid and oleum for industrial use-Determination of total acidity, and calculation of free sulphur trioxide content of oleum-Titrimetric method
HG/T 3614-1999
Standard Test Method for Sulfonic and Sulfuric Acids in Alkylbenzene Sulfonic Acids