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DB14/T 2980-2024 via email in business day valid
GB 3258.1-1982 Chemical analysis of bismuth concentrates--The EDTA volumetric method for determination of bismuth $184.00 via email in 1~3 business day superseded
GB 3258.10-1982 Chemical analysis of bismuth concentrates--The chromazurol S photometric method for determination of aluminium oxide $184.00 via email in 1~3 business day superseded
GB 3258.11-1982 Chemical analysis of bismuth concentrates--The atomic absorption spectrophotometric method for determination of silver $184.00 via email in 1~3 business day superseded
GB 3258.12-1982 Chemical analysis of bismuth concentrates--The atomic absorption spectrophotometric method for determination of lead and copper $184.00 via email in 1~3 business day superseded
GB 3258.2-1982 Chemical analysis of bismuth concentrates--The EDTA volumetric method for determination of lead $180.00 via email in 1~3 business day valid
GB 3258.3-1982 Chemical analysis of bismuth concentrate The molybdenum blue photometric method for determination of silicon dioxide $184.00 via email in 1~3 business day superseded
GB 3258.4-1982 Chemical analysis of bismuth concentrates--The thiocyanate photometric method for determination of tungsten trioxide $184.00 via email in 1~3 business day superseded
GB 3258.5-1982 Chemical analysis of bismuth concentrates--The thiocyanate photometric method for determination of molybdenum $184.00 via email in 1~3 business day superseded
GB 3258.6-1982 Chemical analysis of bismuth concentrates--The EDTA volumetric method for determination of iron $184.00 via email in 1~3 business day superseded
GB 3258.7-1982 Chemical analysis of bismuth concentrates--The barium sulfate gravimetric method for determination of sulfur $184.00 via email in 1~3 business day superseded
GB 3258.8-1982 Chemical analysis of bismuth concentrate The iodometric method for determination of arsenic $184.00 via email in 1~3 business day superseded
GB 3258.9-1982 Chemical analysis of bismuth concentrates--The thiosulfate-iodide method for determination of copper $180.00 via email in 1~3 business day valid
GB 3884.14-1986 Methods for chemical analysis of copper concentrates - Determination of gold and silver content by fire assay $45.00 via email in 1~3 business day superseded
GB 3884.15-1986 Methods for chemical analysis of copper concentrates - Determination of gold and silver content by fire assay $45.00 via email in 1~3 business day superseded
GB 8152.6-1987 Methods for chemical analysis of lead concentrates; The polarographic method for the determination of bismuth content $60.00 via email in 1~3 business day valid
GB 8152.8-1987 Methods for chemical analysis of lead concentrates - The DTPM spectrophotometric method for the determination of bismuth content $60.00 via email in 1~3 business day valid
GB/T 1819-1979 Determination of moisture content in tin concentrates--Gravimetric method $180.00 via email in 1~3 business day abolished
GB/T 1819.1-2004 Methods for chemical analysis of tin concentrates - Determination of water content - The weighing method $104.00 via email in 1~3 business day superseded
GB/T 1819.10-2004 Methods for chemical analysis of tin concentrates - Determination of sulphur content - The high frequency infrared absorption method and the combustion potassium iodate titrimetric m $264.00 via email in 1~3 business day superseded
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