GB/T 23937-2020
Sodium hydrosulfide for industrial use
HG/T 2964-1984
Sodium hydrosulphide for industrial use-Determination of the content of sodium hydrosulphide and sulphide
GB/T 23937-2009
Sodium hydrosulfide for industrial use
HG/T 4834-2015
Sodium hydride for industrial use
HG/T 3585-2023
20243717-T-606
Sodium hydrosulfide for industrial use
HG/T 3585-2009
HG/T 3584\uff5e3585-2023
HG/T 3687-2000
Sodium hydrosulfide for industrial use
HG/T 3585-1999
Liquid sodium borohydride
GB/T 11213.5-2006
Sodium hydroxide for chemical fiber use - Determination of sulphate content
GB/T 4497.2-2013
Rubber - Determination of total sulfur content - Part 2: Sodium peroxide fusion method
DB34/T 2192-2014
GB/T 11213.5-1989
Sodium hydroxide for chemical fiber use--Determination of sulphate mass fraction--Barium sulphategravimetric method
GB/T 11213.6-1989
Sodium hydroxide for chemical fiber use--Determination of sulphate mass fraction--Turbidimetric method
UNE 81595:1998
BIOLOGICAL CONTROL. DETERMINATION OF MERCURY IN URINE. COLD VAPOUR - SODIUM BOROHIDRIDE METHOD. ATOMIC ABSORPTION SPECTROMETRY.
ISO 5992:1979
Sodium hydroxide for industrial use — Determination of mercury content — Dithizone photometric method
KS M ISO 4260-2003(2018)
UNE-EN 24260:1996
PETROLEUM PRODUCTS AND HYDROCARBONS. DETERMINATION OF SULFUR CONTENT. WICKBOLD COMBUSTION METHOD. (ISO 4260:1987).
KS M ISO 6528-2-2006(2011)
Rubber-Determination of total sulfur content-Part 2:Sodium peroxide fusion method