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YS/T 227.4-1994 Determination of iron content in tellurium--1 10-phenanthroline photometric method $15.00 via email in 1~3 business day superseded
YS/T 227.4-2010 Methods for chemical analysis of tellurium—Part 4:Determination of iron content—Phenanthroline spectrophotometry $120.00 via email in 1~3 business day valid
YS/T 227.5-1994 Determination of selenium content in tellurium--2 3-diaminonaphthalene absorption photometric method $15.00 via email in 1~3 business day superseded
YS/T 227.5-2010 Methods for chemical analysis of copper anode slime - Part 2: Determination of gold content and silver content - Fire assay gravimetric method $90.00 via email in 1~3 business day valid
YS/T 227.6-1994 Determination of copper content in tellurium--Neocuproine Chloroform extraction photometric method $15.00 via email in 1~3 business day superseded
YS/T 227.6-2010 Methods for chemical analysis of tellurium - Part 6: Determination of copper content - Solid-liquid separate-flame atomic absorption spectrophotometry $105.00 via email in 1~3 business day valid
YS/T 227.7-1994 Determination of sulphur content in tellurium--Barium sulfate turbidimetry $15.00 via email in 1~3 business day superseded
YS/T 227.7-2010 Methods for chemical analysis of tellurium- Part 7: Determination of sulphur content-Inductively coupled plasma- atomic emission spectrometry $105.00 via email in 1~3 business day valid
YS/T 227.8-1994 Determination of magnesium and sodium contents in tellurium--Atomic absorption spectrophotometric method $15.00 via email in 1~3 business day superseded
YS/T 227.8-2010 Methods for chemical analysis of bismuth - Part 8: Determination of magnesium and sodium content - Flame atomic absorption spectrometry $90.00 via email in 1~3 business day valid
YS/T 227.9-1994 Determination of tellurium content in tellurium--Potassium dichromate-ammonium ferrous sulfate volumetric method $15.00 via email in 1~3 business day superseded
YS/T 227.9-2010 Methods for chemical analysis of tellurium—Part 9:Determination of tellurium content—Potassium bichromate-ammonium ferrous sulfate titration $120.00 via email in 1~3 business day valid
YS/T 229.1-1994 High pure lead - Determination of silver copper bismuth aluminum nickel tin magnesium and iron contents - Spectrochemical method $30.00 via email in 1~3 business day superseded
YS/T 229.1-2013 Methods for Chemical Analysis of High Pure Lead - Part 1: Determination of Silver, Copper, Bismuth, Aluminum, Nickel, Tin, Magnesium and Iron Contents - Atomic Emission Spectrometer $105.00 via email in 1~3 business day valid
YS/T 229.1-2025 via email in business day valid
YS/T 229.2-1994 High pure lead - Determination of arsenic content - Arsenic-molybdenum blue photometric method $30.00 via email in 1~3 business day superseded
YS/T 229.2-2013 Methods for Chemical Analysis of High Pure Lead - Part 2: Determination of Arsenic Content - Atomic Fluorescence Spectrometry $120.00 via email in 1~3 business day valid
YS/T 229.3-1994 High pure lead - Determination of antimony content - Malachite green photometric method $30.00 via email in 1~3 business day superseded
YS/T 229.3-2013 Methods for Chemical Analysis of High Pure Lead - Part 3: Determination of Antimony Content - Atomic Fluorescence Spectrometry $120.00 via email in 1~3 business day valid
YS/T 229.4-2013 Chemical Analysis Methods for High Purity Lead - Part 4: Determination of Trace Impurity Elements Content - Glow Discharge Mass Spectrometry $120.00 via email in 1~3 business day valid
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