Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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GB/T 15249.3-1994 Crude Gold-Determination of copper content-Iodometric method 30.0 via email in 1~3 business day superseded
YS/T 74.5-2010 Methods for chemical analysis of cadmium—Part 5:Determination of copper content—Lead diethyldithio-carbamate spectrophotometry 120.0 via email in 1~3 business day valid
GB/T 15076.7-1994 Methods for chemical analysis of tantalum and niobium-Determination of phospherus content in niobium 45.0 via email in 1~3 business day valid
GB/T 12690.27-1990 Rare-earth metals and their oxides-Determination of ignition loss-Gravimetric method 15.0 via email in 1~3 business day abolished
GB/T 2967-1989 Cast tungsten carbide 30.0 via email in 1~3 business day superseded
GB/T 15076.6-1994 Methods for chemical analysis of tantalum and niobium-Determination of silicon content in tantalum 90.0 via email in 1~3 business day valid
GB/T 15076.8-1994 Methods for chemical analysis of tantalum and niobium-Determination of sulphur content in niobium 45.0 via email in 1~3 business day abolished
YS/T 520.6-2007 Chemical analysis of gallium Part 6 Determination of tin content The salicylfluorone cetyltrimethyl ammonium bromide spectrophotometric method 90.0 via email in 1~3 business day valid
YS/T 1011-2014 105.0 via email in 1~3 business day valid
GB/T 13747.8-1992 and zirconium alloys - Determination of cobalt content-1-nitroso-2-hydroxy-3.6-naphthalene - Disulfonic acid(sodium salt) spectrophotometric method 30.0 via email in 1~3 business day valid
GB/T 15076.11-1994 Methods for chemical analysis of tantalum and niobium-Determination of arsenic antimony,lead,tin and bismuth contents in niobium 60.0 via email in 1~3 business day valid
GB/T 11067.1-1989 Silver-Determination of silver content-Silver chloride precopitation-Flame atomic absorption spectrometric method 45.0 via email in 1~3 business day superseded
GB/T 4950-1985 Sacrificial anode of Zn-Al-Cd alloy 225.0 via email in 1~3 business day abolished
GB/T 2592.4-1981 Thallium;Determination of zinc content;Dithizone extraction photometric method 30.0 via email in 1~3 business day abolished
GB/T 18307-2001 Methods for chemical analysis of crude silver 120.0 via email in 1~3 business day valid
YS/T 349.1-2009 Methods for chemical analysis of cobalt sulfide concentrate—Part 1:Determination of cobalt content—Potentiometric titration method 120.0 via email in 1~3 business day valid
YS/T 520.8-2007 Chemical analysis of gallium Part 8 Determination of indium content The ethyl violet spectrophotometric method 90.0 via email in 1~3 business day valid
GB/T 11067.7-1989 Silver-Determination of copper, bismuth, iron, lead, gold and antimony contents-Emission spectrometric method 30.0 via email in 1~3 business day superseded
YS/T 281.2-2011 Mehtods for chemical analysis of cobalt--Part 2:Determination of aluminum content--Chromeszurol S spectrophotometry 120.0 via email in 1~3 business day valid
GB/T 8182-1987 Tantalum and tantalum alloy seamless tubes 45.0 via email in 1~3 business day superseded
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