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GB 7745.2-1987 Hydrofluoric acid for industrial use--Determination of nonvolatile acids content--Titrimetric method (USD) via email in 1-3 business day ABOLISHED
DL 422.2-1991 (USD) via email in 1-3 business day ABOLISHED
GB/T 11198.10-1989 Sulphuric acid for industrial use-Determination of mercury content-Flameless atomic absorption spe (USD) via email in 1-3 business day ABOLISHED
GB 11198.11-1989 Sulphuric acid for industrial use-Determination of oxides of nitrogen-2.4-xylenol spectrophotometric method (USD) via email in 1-3 business day ABOLISHED
GB/T 7698-1987 Sodium hydroxide for industrial use--Determination of carbonates content--Titrimetric method (USD) via email in 1-3 business day ABOLISHED
HG/T 2566-2006 Barium hydroxide for industrial use (USD) via email in 1-3 business day ABOLISHED
GB 11213.7-1989 Sodium hydroxide for chemical fiber use; Determination of copper mass fraction; Spectrometric method (USD) via email in 1-3 business day ABOLISHED
GB/T 12684-2006 Methods of test for boron compound for industrial use via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 11200.1-2006 Sodium hydroxide for industrial use - Determination of sodium chlorate content - O-Tolidine spectrometric method (USD) via email in 1-3 business day VALID
GB 7747.1-1987 Anhydrous hydrogen fluoride for industrial use--Determination of water content (USD) via email in 1-3 business day ABOLISHED
GB/T 11213.7-2008 Test methods of sodium hydroxide for chemical fiber use -Part 7:Determination of copper content-spectrometric method (USD) via email in 1-3 business day VALID
GB/T 538-2018 Boric acid for industrial use (USD) via email in 1-3 business day VALID
GB 320-2006 Synthetic hydrochloric acid for industrial use (USD) via email in 1-3 business day VALID
HG/T 3825-2006 Sodium hydroxide produced from natural soda by causticizing process (USD) via email in 1 business day VALID
GB/T 13549-2008 Chlorsulphonic acid for industrial use via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 11199-1989 Membrane process sodium hydroxide (USD) via email in 1-3 business day ABOLISHED
GB 7745.4-1987 Hydrofluoric acid for industrial use--Determination of iron content--Spectrophotometric method (USD) via email in 1-3 business day ABOLISHED
GB/T 11198.15-1989 Sulphuric acid for industrial use-Determination of colourity (USD) via email in 1-3 business day ABOLISHED
GB 11213.2-1989 Sodium hydroxide for chemical fiber use; Determination of sodium chloride content; Spectrometric method (USD) via email in 1-3 business day ABOLISHED
GB/T 4147.1-1984 Method of test for nitric acid content in concentrated nitric acid-Volumetry (USD) via email in 1-3 business day ABOLISHED
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