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GB/T 8152.1-2006 Methods for chemical analysis of lead concentrates―Determination of lead content―EDTA titration method after acid digestion 200.0 via email in 1~3 business day valid
SN 0065.2-1992 Method for determination of ignition loss for export Europium-Rich Yttrium-Rich Sm-Eu-Gd oxides―Gravimetric method 30.0 via email in 1~3 business day abolished
GB/T 1819.5-2004 Methods for chemical analysis of tin concentrates - Determination of arsenic content - The molybdoantimonyarsenate blue spectrophotometric method and the distillation-iodimetric titri 60.0 via email in 1~3 business day valid
GB 3258.3-1982 30.0 via email in 1~3 business day superseded
GB/T 8152.2-1987 Methods for chemical analysis of lead concentrates; The Na2 EDTA volumetric method for the determination of zinc content 30.0 via email in 1~3 business day abolished
GB 3258.1-1982 15.0 via email in 1~3 business day superseded
GB/T 1819.8-2017 Methods for chemical analysis of tin concentrates―Part 8:Determination of zinc content―Flame atomic absorption spectrometric method 105.0 via email in 1~3 business day valid
SN 0065.3-1992 Method for determination of total rare earth qxides content for export Europium-Rich Yttrium-Rich Sm-Eu-Gd qxides―Gravimetric method 204.0 via email in 1~3 business day superseded
YB/T 159.3-1999 Methods for chemical analysis of titanium concentrate(rock minerals)—The potassium dichromate volumetric method for the determination of ferrous oxide content 45.0 via email in 1~3 business day superseded
YS/T 240.5-1994 C 15.0 via email in 1~3 business day superseded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infrared absorption method and the combustion potassium iodate titrimetric m 60.0 via email in 1~3 business day superseded
GB/T 1822-1979 Determination of copper content in tin concentrates;Biscyclohexanone oxalyl-dihydrazone photometric method 45.0 via email in 1~3 business day abolished
GB 3258.12-1982 45.0 via email in 1~3 business day superseded
GB/T 1831-1979 Determination of silicon dioxide content in tin concentrates--Silicon molybdenum blue photometric method 180.0 via email in business day abolished
GB/T 1823-1979 Determination of lead content in tin concentrates 180.0 via email in business day abolished
GB/T 1819.4-2004 Methods for chemical analysis of tin concentrates - Determination of lead content - Flame atomic absorption spectrometric method and EDTA titrimetric method 60.0 via email in 1~3 business day valid
YS/T 240.3-1994 C 30.0 via email in 1~3 business day superseded
GB/T 1827-1979 Determination of zinc content in tin concentrates;Polarographic method 180.0 via email in business day abolished
YS/T 240.11-1994 Chemical analysis of bismuth concentrate The atomic absorption spectrophotometric method for determination of silver 45.0 via email in 1~3 business day superseded
GB/T 1819.10-2017 Methods for chemical analysis of tin concentrates―Part 10:Determination of sulfur content―High frequency combustion with infrared absorption method and potassium iodate titrimetric method 165.0 via email in 1~3 business day to be valid
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