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GB/T 8152.4-1987 Methods for chemical analysis of lead concentrates; The atomic absorption spectrophotometric method for the determination of copper content (USD) via email in 1-3 business day ABOLISHED
GB/T 8152.7-1987 Methods for chemical analysis of lead concentrates; The arsenic-bismuth-molybdenum blue spectrophotometric method for the determination of arsenic content (USD) via email in 1-3 business day ABOLISHED
GB/T 8152.5-1987 Methods for chemical analysis of lead concentrates; The atomic absorption spectrophotometric method for the determination of magnesium oxide content (USD) via email in 1-3 business day ABOLISHED
YB/T 159.7-2015 Titanium concentrate(rock minerals). Determination of calcium oxide and magnesium oxide content. The flame atomic absorpton spectrophotometlric method via email in VALID please email coc@codeofchina.com for quotation
GB/T 8152.3-2006 Methods for chemical analysis of lead concentrates―Determination of aluminium(III)oxide content―Chromazurol S spectrophotometric method via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB 3884.13-1983 (USD) via email in 1-3 business day ABOLISHED
GB/T 1820-1979 Determination of tin content in tin concentrates--Beryllium as carrier-fusion with sodium peroxide iodate titrimetric method via email in ABOLISHED please email coc@codeofchina.com for quotation
SN 0065.2-1992 Method for determination of ignition loss for export Europium-Rich Yttrium-Rich Sm-Eu-Gd oxides—Gravimetric method (USD) via email in 1-3 business day ABOLISHED
GB/T 8152.5-2006 Methods for chemical analysis of lead concentrates―Determination of arsenic content―Atomic fluorescence spectrometer method via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
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 method via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
YS/T 240.9-1994 Chemical analysis of bismuth concentrate The thiosulfate-iodide method for determination of copper (USD) via email in 1-3 business day ABOLISHED
YB/T 159.5-1999 Methods for chemical analysis of titanium concentrate(rock minerals)—The combustion iodometric method for the determination of sulfur content (USD) via email in 1-3 business day ABOLISHED
GB 3884.15-1986 (USD) 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 titrimetric method via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
YS/T 240.3-1994 C (USD) via email in 1-3 business day ABOLISHED
GB 3884.14-1986 (USD) via email in 1-3 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 via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 8152.3-1987 Methods for chemical analysis of lead concentrates; The chromazurol S spectrophotometric method for the determination of aluminium (3) oxide content (USD) via email in 1-3 business day ABOLISHED
GB 3258.7-1982 (USD) via email in 1-3 business day ABOLISHED
GB/T 1827-1979 Determination of zinc content in tin concentrates;Polarographic method via email in ABOLISHED please email coc@codeofchina.com for quotation
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