HG/T 3535-2011
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 11198.6-1989
Sulphuric acid for industrial use--Determination of arsenic content--Gutzeit method
GB/T 11198.13-1989
Sulphuric acid for industrial use--Determination of chlorine content--Potentiometric method
DL 422.4-1991
GB/T 12684.4-1990
Boric acid for industrial use—Determination of sulphate content by visual turbidimetry
GB/T 12684.3-1990
Boric acid for industrial use—Determination of sulphate content by reduction and titrimetry
GB/T 11198.9-1989
Sulphuric acid for industrial use--Determination of mercury content--Dithizone photometric method
GB/T 11198.7-1989
Sulphuric acid for industrial use--Determination of lead content--Dithizone photometric method
\u0413\u041e\u0421\u0422 30621-98
Hydrochloric acid for industrial use. Determination of arsenic content by silver diethyldithiocarbamate photometric method
KS M ISO 2480-2017(2022)
Sodium chloride for industrial use — Determination of sulphate content — Barium sulphate gravimetric method
GB/T 11198.8-1989
Sulphuric acid for industrial use--Determination of lead content--Atomic absorption spectroscopy
GB/T 11198.4-1989
Sulphuric acid for industrial use--Determination of iron content--Atomic absorption spectroscopy
KS M ISO 2480-2017
Sodium chloride for industrial use — Determination of sulphate content — Barium sulphate gravimetric method
GB/T 11198.12-1989
Sulphuric acid for industrial use--Determination of sulphur dioxide content--Iodometric method
GB/T 11198.10-1989
Sulphuric acid for industrial use--Determination of mercury content--Flameless atomic absorption spectremetric method
KS M ISO 2997-2017(2022)
Phosphoric acid for industrial use-Determination of sulphate content-Method by reduction and titrimetry
GB/T 11198.3-1989
Sulphuric acid for industrial use--Determination of iron content--O-Phenanthroline spectrophotometric method
KS M ISO 2997-2017
Phosphoric acid for industrial use-Determination of sulphate content-Method by reduction and titrimetry
GB/T 6276.4-2010
Determination of ammonium hydrogen carbonate for industrial use—Part 4:Sulphate content—Visible turbidimetric method