GB/T 11213.1-2007
Sodium hydroxide for chemical fiber use - Determination of sodium hydroxide content
GB/T 4348.2-2014
Sodium hydroxide for industrial use―Determination of sodium chloride content―Mercurimetric method
GB/T 4348.1-2013
Sodium hydroxide for industrial use - Determination of sodium hydroxide and sodium carbonate content
GB/T 11213.2-2007
Sodium hydroxide for chemical fiber use - Determination of sodium chloride content - Spectrometric method
GB/T 11213.5-2006
Sodium hydroxide for chemical fiber use - Determination of sulphate content
DB51/T 2045-2015
GB/T 7698-2014
Sodium hydroxide for industrial use―Determination of carbonates content―Titrimetric method
YB/T 190.5-2016
Continuous casting mold powder - Determination of potassium oxide and sodium oxide content - The flame atomic absorption spectrometric method
GB/T 4497.2-2013
Rubber - Determination of total sulfur content - Part 2: Sodium peroxide fusion method
YB/T 4711-2018
GB/T 6609.5-2004
Chemical analysis methods and determination of physical performance of alumina--Determination of sodium oxide content
GB/T 2677.5-1993
Fibrous raw material--Determinationof one percent sodium hydroxide solubility
GB/T 22651-2008
Sodium hydroxide for industrial use - Determination of mercury content - Spectrometric method
JB/T 7948.7-2017
Methods for chemical analysis of welding fluxes-Part 7:Determination of sodium oxide and potassium oxide content
GB/T 22650-2008
Sodium hydroxide for industrial use - Determination of calcium and magnesium content - Complexometric method
GB/T 11213.3-2003
Sodium hydroxide for chemical fiber use--Determination of the calcium content--EDTA complexometric method
YB/T 5335-2009
GB/T 12010.7-2010
Plastics - polyvinyl alcohol (PVAL)materials - Part 7: Determination for sodium hydroxide contents
20243753-T-605
Steel slag-The determination of sodium oxide and potassium oxide
GB/T 4348.2-2002
Sodium hydroxide for industrial use—Determination of sodium chloride content—Mercurimetric method