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GB/T 11066.4-1989 Gold-Determination of copper, lead, bismuth and antimony contents-Flame atomic absorption spectrometric method (USD) via email in 1-3 business day ABOLISHED
GB/T 15249.3-2009 Methods for chemical analysis of crude gold - Part 3: Determination of copper content - Iodometric method (USD) via email in 1-3 business day VALID
YS/T 74.3-2010 Methods for chemical analysis of cadmium—Part 3:Determination of nickel content—Electrothermal atomic absorption spectrometric method (USD) via email in 1-3 business day VALID
GB/T 15249.4-2009 Methods for chemical analysis of crude gold - Part 4: Determination of lead content - EDTA titrimetric method (USD) via email in 1-3 business day VALID
GB/T 2967-1989 Cast tungsten carbide (USD) via email in 1-3 business day ABOLISHED
YS/T 536.1-2006 Methods for chemical analysis of bismuth -- Determination of copper content -- Bis-acetaldehyde-oxalydihydrazone photometric method (USD) via email in 1-3 business day ABOLISHED
GB/T 13747.6-1992 Zirconium and zirconium alloys-Determination of copper content-2,9-dimethyl-1,10-phenanthroline spectrophotometric method (USD) via email in 1-3 business day ABOLISHED
GB/T 13747.15-1992 Zirconium and zirconium alloys-Determination of boron content-Curcumin spectrophotometric method (USD) via email in 1-3 business day ABOLISHED
YS/T 281.9-2011 Methods for chemical analysis of cobalt- Part 9:Determination of lead content-Flame atomic absorption spectrometery (USD) via email in 1-3 business day VALID
YS/T 536.11-2009 Method for chemical analysis of bismuth—Determination of mercury content—Atomic fluorescence spectrometric method (USD) via email in 1-3 business day VALID
GB/T 8183-1987 Niobium seamless tubes (USD) via email in 1-3 business day ABOLISHED
GB/T 15076.7-1994 Methods for chemical analysis of tantalum and niobium-Determination of phospherus content in niobium (USD) via email in 1-3 business day VALID
YS/T 520.12-2006 Methods for chemical analysis of gallium The spectrochemical method for the determination of lead coper nickel aluminum indium and zinc contents (USD) via email in 1-3 business day ABOLISHED
YS/T 536.3-2009 Methods for chemical analysis of bismuth—Determination of antimony content—Melachite green photometric method (USD) via email in 1-3 business day VALID
GB/T 18307-2001 Methods for chemical analysis of crude silver (USD) via email in 1-3 business day VALID
YS/T 74.9-2010 Methods for chemical analysis of cadmium—Part 9:Determination of tin content—Hydride generation-atomic fluorescence spectrometry (USD) via email in 1-3 business day VALID
YS/T 540.6-2006 Vanadium -- Determination of silicon content -- N-butyl alcohol extraction spectrophotometric method (USD) via email in 1-3 business day ABOLISHED
GB/T 8220.12-1998 Methods for chemical analysis of bismuth-Determination of nickel content-Electrothermal atomic absorption spectrometric method via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
YS/T 281.18-2011 Methods for chemical analysis of cobalt- Part 18:Determination of sodium content-Flame atomic absorption spectrometery (USD) via email in 1-3 business day VALID
GB/T 19198-2003 Measuring method for thermoelectricity force of precious metals and their alloys pair up with platinum (USD) via email in 1-3 business day ABOLISHED
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