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GB/T 22650-2008 Sodium hydroxide for industrial use - Determination of calcium and magnesium content - Complexometric method (USD) via email in 1-3 business day VALID
GB/T 6610.4-1986 Methods for chemical analysis of aluminium hydroxide--The ortho-phenanthroline photometric method for the determination of ferric oxide content (USD) via email in 1-3 business day ABOLISHED
GB/T 11213.5-2006 Sodium hydroxide for chemical fiber use—Determination of sulphate content via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 11213.3-2003 Sodium hydroxide for chemical fiber use—Determination of the calcium content—EDTA complexometric method via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB 11213.6-1989 Sodium hydroxide for chemical fiber use; Determination of sulphate mass fraction; Turbidimetric (USD) via email in 1-3 business day ABOLISHED
XB/T 210-1995 Cerium-Concentrate hydrate via email in please email coc@codeofchina.com for quotation
YS/T 534.4-2007 Chemical analysis methods of aluminium hydroxide Part 4:Determination of iron oxide content Orthophenanthroline photometric method (USD) via email in 1-3 business day VALID
GB 11213.4-1989 Sodium hydroxide for chemical fiber use; Determination of silicon mass fraction; Reduced molybdosilicate spectrometric method (USD) via email in 1-3 business day ABOLISHED
HG/T 3688-2010 Flaky and high-quality potassium hydroxide via email in VALID please email coc@codeofchina.com for quotation
YS/T 534.2-2006 Chemical analysis methods of aluminium hydroxide. Determination of the loss of mass at 1100 Celsius. Gravimetric method (USD) via email in 1 business day ABOLISHED
YS/T 534.4-2006 Chemical analysis methods of aluminium hydroxide. Determination of ferric oxide content. Orthophenanthroline photometric method (USD) via email in 1 business day ABOLISHED
GB/T 11200.1-1989 Membrane process sodium hydroxide; Determination of sodium chlorate content-o-Tolidine spectrometric method (USD) via email in 1-3 business day ABOLISHED
HG/T 3688-2000 Flaky and high-quality potassium hydroxide for industrial use (USD) via email in 1-3 business day ABOLISHED
GB/T 4348.3-2002 Sodium hydroxide for industrial use--Determination of iron content--1,10-Phenanthroline photometric method via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
HG/T 4531-2013 Magnesium hydroxide for flame retardant (USD) via email in 1-3 business day VALID
GB/T 6610.5-2003 Chemical analysis methods of aluminium hydroxide?Determination of sodium oxide content via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
HG/T 3815-2013 Potassium hydroxide solution by ion exchange membrance method for industry use (USD) via email in 1-3 business day VALID
GB/T 11200.2-1989 Membrane process sodium hydroxide; Determination of aluminium oxide content-spectrometric method (USD) via email in 1-3 business day ABOLISHED
GB/T 4348.2-2014 Sodium hydroxide for industrial use—Determination of sodium chloride content—Mercurimetric method (USD) via email in 1-3 business day VALID
GB/T 7698-2003 Sodium hydroxide for industrial use; Determination of carbonates content; Titrimetric method (USD) via email in 1-3 business day ABOLISHED
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