GB/T 7731.1-2021
Ferrotungsten—Determination of tungsten content—Cinchonine gravimetric method and ammonium nitrate gravimetric method
GB/T 10209.2-2010
Determination of monoammonium phosphate and diammonium phoshpate - Part 2: Phosphorus content
GB/T 10209.1-2008
Determination of monoammonium phosphate and diammonium phoshpate - Part 1: Total nitrogen content
YB/T 4218-2010
Vanadium pentoxide-Determination of vanadium pentoxide content-The ammonium persulfate oxidation titrimetric method
GB/T 19720-2024
Jewellery and precious metals—Determination of platinum and palladium—Gravimetry using ammonium chloride and dimethylglyoxime
GB/T 10209.2-2001
Determination of available phosphous content for monoammonium phosphate and diammonium phosphate
SN/T 3808-2014
Determination of total phosphorus content in diammonium phosphate - X-ray fluorescence spectrometry
SN/T 0951-2010
Determination of tungsten trioxide content in ammonium paratungstate for import and export
GB/T 6150.1-2023
Methods for chemical analysis of tungsten concentrates—Part 1:Determination of tungsten trioxide content—Ammonium tungstate igniting gravimetric method
YB/T 547.1-2014
Vanadium slag - Determination of vanadium pentoxide content - Ammonium ferrous sulfate titrimetric method
QB/T 1915-2021
GB/T 10209.1-2001
Determination of total nitrogen content for monoammonium phosphate and diammonium phosphate Titrimetric method after distillation
DB65/T 3397-2012
YB/T 5328-2009
SN/T 3804-2014
Determination of the tri-ethylene glycol,di-ethylene glycol and water in the tri-ethylene glycol for import and export
YB/T 6055-2022
EJ/T 786-1993
YB/T 159.1-2015
Titanium concentrate (rock minerals) - Determination of titanium dioxide content - The ferric ammonium sulfate titrimetric method
SN/T 4244-2015
Determination of chloride in ethylene glycol,diethylene glycol and triethylene glycol-Ion chromatography
QB/T 1914-2013
Determination of mean relative molecular weight of alkyltrimethylammonium halide and alkyldimethylbenzylammonium halide by GC