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GB/T 23773-2009 Inorganic chemicals for industrial use - General method for determination of ammonium content - Nesslers reagent colorimetric method 180.0 via email in 1~3 business day valid
GB/T 23951-2009 Inorganic chemicals for industrial use—General method for the determination of residue after ignition 120.0 via email in 1~3 business day valid
GB/T 23834.1-2009 Chemical analysis method for stannous sulfate - Part 1: Determination of stannous sulfate content - Volumetric method of potassium dichromate 120.0 via email in 1~3 business day valid
GB/T 23278.5-2009 Methods for chemical analysis of sodium stannate - Part 5: Determination of antimony content - Malachite green photometric method 110.0 via email in 1~3 business day valid
GB/T 23278.7-2009 Methods for chemical analysis of sodium stannate - Part 7: Determination of alkali insoluble matter - Gravimetric analysis 90.0 via email in 1~3 business day valid
GB/T 23834.6-2009 Chemical analysis method for stannous sulfate - Part 6: Determination of iron content - 1 10-phenanthroline spectrophotometry 120.0 via email in 1~3 business day valid
GB/T 23274.6-2009 Methods for chemical analysis of stannic oxide - Part 6: Determination of sulfate content - Visual turbidimetry method 90.0 via email in 1~3 business day valid
GB/T 23842-2009 General method for the determination of silicon content of inorganic chemicals - Reduced molybdosilicate spectrophotometric method 180.0 via email in 1~3 business day valid
GB/T 27569-2011 Production technical regulation for Hydrofluoric acid 300.0 via email in 1~5 business day valid
GB/T 8570.5-2010 Determination of liquefied anhydrous ammonia—Part 5:Water content—Karl Fishcer method 110.0 via email in 1~3 business day valid
HG/T 3811-2006 Methods of test for bromide for industrial use 140.0 via email in 1~3 business day valid
GB/T 19282-2014 Analytic method for lithium hexafluorophosphate 210.0 via email in 1~3 business day valid
GB/T 12737-1991 Chemical products for industrial use-General method for determination of traces of sulfate by reduction and titrimetry 135.0 via email in 1~3 business day abolished
YB/T 5326-2006 Method of the determination for the water insoluble matter content of sodium ferrocyanide 30.0 via email in 1~3 business day valid
GB/T 23835.12-2009 Lithium perchlorate anhydrous - Part 12: Determination of total nitrogen content 120.0 via email in 1~3 business day valid
HG/T 3696.2-2002 Inorganic chemical products Preparations of standard solutions for chemical analysis 180.0 via email in 1~3 business day abolished
GB/T 30906-2014 Determination of sodium tripolyphosphate content of sodium tripolyphosphate―Ion chromatography 90.0 via email in 1~3 business day valid
YB/T 5325-2006 Method of the determination for the content of sodium ferrocyanide 30.0 via email in 1~3 business day superseded
GB/T 12737-2008 Chemical products for industrial use-General method for determination of traces of sulphur compounds as sulphate by reduction and titrimetry 190.0 via email in 1~3 business day valid
GB/T 21058-2007 Inorganic chemicals for industrial use—General method for mercury content—Flameless atomic absorption spectrometric method 150.0 via email in 1~3 business day valid
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