Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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GB/T 3257.22-1999 Methods for chemical analysis of bauxite--Preparation of pre-dried test samples $180.00 via email in 1~3 business day superseded
GB/T 3257.23-1999 Methods for chemical analysis of bauxite--Determination of organic carbon content--Titrimetric method $224.00 via email in 1~3 business day superseded
GB/T 3257.24-1999 Methods for chemical analysis of bauxite--Determination of hydroscopic moisture in analytical samples--Gravimetric method $224.00 via email in 1~3 business day superseded
GB/T 3257.3-1999 Methods for chemical analysis of bauxite--Determination of silicon dioxide content--Molybdenum blue photometric method $184.00 via email in 1~3 business day superseded
GB/T 3257.4-1999 Methods for chemical analysis of bauxite--Determination of iron oxide content--Dichromate titrimetric method $224.00 via email in 1~3 business day superseded
GB/T 3257.5-1999 Methods for chemical analysis of bauxite--Determination of iron oxide content--Orthophenanthroline photometric method $184.00 via email in 1~3 business day superseded
GB/T 3257.6-1999 Methods for chemical analysis of bauxite--Determination of titanium dioxide content--Diantipyrylmethane photometric method $300.00 via email in 1~3 business day superseded
GB/T 3257.7-1999 Methods for chemical analysis of bauxite--Determination of calcium oxide content--Flame atomic absorption spectrophotometric method $220.00 via email in 1~3 business day superseded
GB/T 3257.8-1999 Methods for chemical analysis of bauxite--Determination of magnesium oxide content--Flame atomic absorption spectrophotometric method $260.00 via email in 1~3 business day superseded
GB/T 3257.9-1999 Methods for chemical analysis of bauxite--Determination of potassium oxide and sodium oxide content--Flame atomic absorption spectrophotometric method $260.00 via email in 1~3 business day superseded
GB/T 34211-2017 Iron ores--Method for determination of iron reduction softening drippinger performance under load $250.00 via email in 1~3 business day valid
GB/T 34214-2017 Iron ores--Determination of weight of free water $130.00 via email in 1~3 business day valid
GB/T 34568-2017 Iron ores for blast furnace and direct reduction feedstocks - Determination of bulk density $130.00 via email in 1~3 business day valid
GB/T 36144-2018 Limit on element content of lead,arsenic,cadmium,mercury,fluorine and chlorine in iron ore $60.00 via email in 1~3 business day valid
GB/T 36704-2018 Iron ore concentrate $160.00 via email in 1~3 business day valid
GB/T 3714-2017 Manganese carbonate ore $100.00 via email in 1~3 business day valid
GB/T 37829-2019 Iron ore fines in bulk—Determination of transportable moisture limits—Flow-table method $220.00 via email in 1~3 business day valid
GB/T 38812.1-2020 Direct reduced iron—Determination of iron(Ⅱ) content—The potassium dichromate titrimetric method after decomposition of sample by ferric chloride $90.00 via email in 1~3 business day valid
GB/T 38812.2-2020 Direct reduced iron—Determination of metallic iron content—The potassium dichromate titrimetric method after decomposition of sample by ferric chloride $90.00 via email in 1~3 business day valid
GB/T 38812.3-2020 Direct reduced iron—Determination of silicon, manganese, phosphorus, vanadium, titanium, copper, aluminum, arsenic, magnesium, calcium, potassium and sodium content—Inductively coupled plasma atomic emission spectrometric method $255.00 via email in 1~3 business day valid
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