DL 422.2-1991
DL 422.4-1991
DL 422.3-1991
HG/T 3736-2013
Hydroxylammonium chloride for industrial use
GB/T 11987-2022
Surface active agents—Technical alkane sulphonates—Determination of total alkane sulphonates content
GB/T 7698-2014
Sodium hydroxide for industrial use―Determination of carbonates content―Titrimetric method
GB/T 23836-2009
Determination of molybdate in industrial circulating cooling water - Spectrometric method using thiocyanate
GB/T 11988-2008
Surface active agents - Technical alkane sulfonates - Determination of mean relative molecular mass and content of the alkane monosulfonate
GB/T 20199-2006
Surface active agents - Technical alkane sulfonates - Determination of alkane monosulfonates content by direct two-phase titration
HG/T 3540-2011
HG/T 3736-2004
T/ZZB 3367-2023
KS M ISO 909-2002(2007)
Hydrochloric acid for industial use-Determination of iron content -2, 2′-bipyridyl spectrophotometric method
HG/T 3535-2011
\u0413\u041e\u0421\u0422 30582-98
Hydrochloric acid for industrial use. Determination of iron content 2,2'-bipyridyl spectrophotometric method
\u0413\u041e\u0421\u0422 30621-98
Hydrochloric acid for industrial use. Determination of arsenic content by silver diethyldithiocarbamate photometric method
GB/T 7698-2003
Sodium hydroxide for industrial use—Determination of carbonates content—Titrimetric method
GB/T 6276.4-2010
Determination of ammonium hydrogen carbonate for industrial use—Part 4:Sulphate content—Visible turbidimetric method
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