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GB/T 20255.1-2006 Methods for chemical analysis of hardmetals?Determination of calcium,potassium,magnesium and sodium contents?Flame atomic absorption spectrometric method $60.00 via email in 1~3 business day valid
GB/T 20255.2-2006 Methods for chemical analysis of hardmetals—Determination of cobalt,iron,manganese and nickel contents—Flame atomic absorption spectrometric method $60.00 via email in 1~3 business day valid
GB/T 20255.3-2006 Methods for chemical analysis of hardmetals - Determination of molybdenum, titanium and vanadium contents - Flame atomic absorption spectrometric method $140.00 via email in 1~3 business day valid
GB/T 20255.4-2006 Methods for chemical analysis of hardmetals - Determination of cobalt, iron, manganese, molybdenum, nickel, titanium and vanadium contents - Flame atomic absorption spectrometric method $75.00 via email in 1~3 business day valid
GB/T 20255.5-2006 Methods for chemical analysis of hardmetals - Determination of chromium content - Flame atomic absorption spectrometric method $140.00 via email in 1~3 business day valid
GB/T 20255.6-2008 Methods for chemical analysis of hardmetals - Flame atomic absorption spectrometry - General requirements $70.00 via email in 1~3 business day valid
GB/T 21994.1-2008 Chemical analysis of magnesium fluoride - Part 1: Preparation and storage of test samples $84.00 via email in 1~3 business day valid
GB/T 21994.2-2008 Chemical analysis of magnesium fluoride - Part 2: Determination of moisture content - Gravimetric method $84.00 via email in 1~3 business day valid
GB/T 21994.3-2008 Chemical analysis of magnesium fluoride - Part 3: Determination of fluoride content - Distillation-thorium nitrate titration volumetric method $124.00 via email in 1~3 business day valid
GB/T 21994.4-2008 Chemical analysis of magnesium fluoride - Part 4: Determination of magnesium - EDTA volumetric method $90.00 via email in 1~3 business day valid
GB/T 21994.6-2008 Chemical analysis of magnesium fluoride - Part 6: Determination of silica content - Molybdenum blue photometric method $90.00 via email in 1~3 business day valid
GB/T 21994.8-2008 Chemical analysis of magnesium fluoride - Part 8: Determination of sulphate content - Barium sulphate gravimetric method $90.00 via email in 1~3 business day valid
GB/T 223.10-2000 Methods for chemical analysis of iron, steel and alloy－The cupferron separation-chrome azurol S photometric method for the determination of aluminium content $304.00 via email in 1~3 business day abolished
GB/T 223.13-2000 Methods for chemical analysis of iron, steel and alloy－The ammonium ferrous sulfate titration method for the determination of vanadium content $40.00 immediately valid
GB/T 223.14-2000 Methods for Chemical Analysis of Iron, Steel and Alloy - The N-Benzoy-N-Phenylhydroxylamine Extraction Photometric Method for the Determination of Vanadium Content $40.00 immediately valid
GB/T 223.40-2007 Iron, Steel and Alloy - Determination of Niobium Content by the Sulphochlorophenol S Spectrophotometric Method $50.00 immediately valid
GB/T 223.7-2002 Iron powder--Determination of iron content--Potassium dichromate titration method $60.00 immediately valid
GB/T 223.8-2000 Methods for chemical analysis of iron, steel and alloy－The sodium fluoride separation-EDTA titration method for the determination of aluminium content $184.00 immediately valid
GB/T 223.9-2000 Methods for chemical analysis of iron, steel and alloy－The chrom azurol S photometric method for the determination of aluminium content $160.00 via email in 1~3 business day superseded
GB/T 225-2006 Steel - Hardenability test by end quenching(Jominy test) $80.00 immediately valid
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