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GB/T 17672-1999 Determinations for isotopes of lead,strontium and neodymium in rock samples via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 6150.13-1985 Methods for chemical analysis of tungsten concentrates; The ammonium hydroxide-ammonium chloride supporting electrolyte polarographic method for the determination of zinc content (USD) via email in 1-3 business day ABOLISHED
GB/T 6150.19-1985 Methods for chemical analysis of tungsten concentrates; The 2-(5-bromo-pyridylazo)-5-diethylaminophenol photometric method for the determination of antimony content (USD) via email in 1-3 business day ABOLISHED
GB/T 6150.18-1985 Methods for chemical analysis of tungsten concentrates; The sulphosalicylic acid photometric method for the determination of iron content (USD) via email in 1-3 business day ABOLISHED
GB/T 4414-1984 Methods of sampling and sample preparation of tungsten concentrates in bags (USD) via email in 1-3 business day ABOLISHED
GB 2825-1981 (USD) via email in 1-3 business day ABOLISHED
GB/T 13070-1991 Determination of uranium content in uranium ores by method of potentiometric titration via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 6150.12-1985 Methods for chemical analysis of tungsten concentrates; The hydrochloric acid-sodium chloride supporting electrolyte polarographic method for the determination of lead content (USD) via email in 1-3 business day ABOLISHED
GB/T 6150.15-1985 Methods for chemical analysis of tungsten concentrates; The silver diethyldithiocarbamate photometric method for the determination of arsenic content (USD) via email in 1-3 business day ABOLISHED
GB/T 6150.4-1985 Methods for chemical analysis of tungsten concentrates; The molybdenum yellow photometric method for the determination of phosphorus content (USD) via email in 1-3 business day ABOLISHED
GB/T 6150.11-1985 Methods for chemical analysis of tungsten concentrates; The atomic absorption spectrophotometric method for the determination of copper content (USD) via email in 1-3 business day ABOLISHED
GB/T 6150.14-1985 Methods for chemical analysis of tungsten concentrates; The molybdenum blue photometric method for the determination of silicon dioxide content (USD) via email in 1-3 business day ABOLISHED
GB/T 6150.2-1985 Methods for chemical analysis of tungsten concentrates; The potassium iodate volumetric method for the determination of tin content (USD) via email in 1-3 business day ABOLISHED
GB/T 6150.17-1985 Methods for chemical analysis of tungsten concentrates; The semi-xylenol orange photometric method for the determination of bismuth content (USD) via email in 1-3 business day ABOLISHED
GB/T 6150.8-1985 Methods for chemical analysis of tungsten concentrates; The gravimetric method for the determination hygroscopic moisture content (USD) via email in 1-3 business day ABOLISHED
GB/T 6150.16-1985 Methods for chemical analysis of tungsten concentrates; The atomic absorption spectrophotometric method for the determination of manganese content (USD) via email in 1-3 business day ABOLISHED
GB/T 6150.5-1985 Methods for chemical analysis of tungsten concentrates; The barium sulfate gravimetric method for the determination of sulfur content (USD) via email in 1-3 business day ABOLISHED
GB/T 6150.10-1985 Methods for chemical analysis of tungsten concentrates; The thiocyanate photometric method for the determination of molybdenum content (USD) via email in 1-3 business day ABOLISHED
GB/T 6150.6-1985 Methods for chemical analysis of tungsten concentrates; The EDTA volumetric method for the determination of calcium content (USD) via email in 1-3 business day ABOLISHED
GB/T 6150.3-1985 Methods for chemical analysis of tungsten concentrates; The salicylfluorone-tetradecyl pyridine chloride photometric method for the determination of tin content (USD) via email in 1-3 business day ABOLISHED
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