GB/T 21126-2007
Determination of sodium formaldehyde sulfoxylate in grain products
20233875-T-449
Determination of sodium formaldehyde sulfoxylate in grain products
DB34/T 2192-2014
GB/T 43012-2023
Pulp—Determination of cellulose nanocrystal sulfur and sulfate half-ester content
GB/T 11213.5-1989
Sodium hydroxide for chemical fiber use--Determination of sulphate mass fraction--Barium sulphategravimetric method
SN/T 4764-2017
Determination of total carbon,hydrogen,nitrogen and sulfur content in coal-Elemental analyzer method
GB/T 2463-2008
Pyrites and concentrate - Determination of total iron content - Cerium sulfate volumetric and potassium dichromate volumetric methods
HG/T 2957.4-2004
GB/T 11213.6-1989
Sodium hydroxide for chemical fiber use--Determination of sulphate mass fraction--Turbidimetric method
DB63/T 1421-2015
SN/T 3005-2011
Test method for instrumental determination of carbon,hydrogen,nitrogen and sulfur in organic chemicals
GB/T 15057.8-1994
Limestonefor chemical industry--Determination of sulfur content--Gravimetric and combustion-iodate titrimetric methods
DB22/T 1693-2012
SN/T 5251-2020
DB45/T 2107-2019
T/GDASE 0009-2020
GB/T 35871-2018
Inspection of grain and oils—Determination of calcium, potassium,magnesium, sodium, iron, phosphorus, zinc, copper, manganese, boron, barium, molybdenum, cobalt, chromium, lithium, strontium, nickel, sulfur, vanadium, selenium, rubidium contents in cereals and derived products—Inductively coupled plasma optical emission spectrometric method
GB/T 2463.1-1996
Pyrites and concentrate—Determination of total iron content—Part 1:Cerium sulfate volumetric method
KS M ISO 21400-2023
Pulp — Determination of cellulose nanocrystal sulfur and sulfate half-ester content
HG/T 4516-2022