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GB 3654.10-1983 Methods for chemical analysis of ferroniobium;The EDTA volumetric method for the determination of aluminum content 45 (USD) via email in 1-3 business day VALID
YB/T 5328-2006 Methods for chemical analysis of vanadium pentoxide The potassium permanganate oxidation-ammonium ferrous sulfate titrimetric method for the determination of vanadium pentoxide content 45 (USD) via email in 1-3 business day ABOLISHED
GB 3653.5-1983 Methods for chemical analysis of ferroboron;The chromatographic separation-barium sulfate gravimetric method for the determination of sulfur content 60 (USD) via email in 1-3 business day VALID
GB 3829.6-1983 105 (USD) via email in 1-3 business day ABOLISHED
YB/T 4174.2-2008 Silicon-calcium alloy-Determination of phosphorus content-Inductively coupled plasma atomic spectrometric method 105 (USD) via email in 1-3 business day VALID
GB 8654.8-1988 Methods for chemical analysis of manganese metal; The infrared absorption method for the determination of carbon content 45 (USD) via email in 1-3 business day ABOLISHED
YB/T 4462-2015 High purity ferrosilicon. Determination of boron content. Inductively coupled plasma atomic emission spectrometric method via email in VALID please email coc@codeofchina.com for quotation
GB 223.18-1982 45 (USD) via email in 1-3 business day ABOLISHED
GB 223.63-1988 Methods for chemical analysis of iron, steel and alloy; The sodium(potassium)periodate photometric method for the determination of manganese content 60 (USD) via email in 1-3 business day VALID
GB 7731.14-1988 Methods for chemical analysis of ferrotungsten-The polarographic method for the determination of lead content 45 (USD) via email in 1-3 business day ABOLISHED
YB/T 5342-2006 Methods for chemical analysis of ferrophorus The combustion-neutralization titratin method for the determination of sulfur content 60 (USD) via email in 1-3 business day ABOLISHED
GB 8654.3-1988 Methods for chemical analysis of manganese metal; The molybdenum blue photometric method for the determination of silicon content 45 (USD) via email in 1-3 business day ABOLISHED
YB/T 178.1-2000 Method for chemical analysis of silicon-aluminium alloy ad silicon-barium-aluminium alloy The percholoric acid dehydration-gravimetric method for the determination of silicon content 60 (USD) via email in 1-3 business day ABOLISHED
GB 223.70-1989 Methods for chemical analysis of iron steel and alloy; The O-Phenanthroline spectrophotometric method for the determination of iron content 75 (USD) via email in 1-3 business day ABOLISHED
GB 223.25-1984 via email in ABOLISHED please email coc@codeofchina.com for quotation
GB 7731.13-1988 Methods for chemical analysis of ferrotungsten; The combustion-neutralization titration method for the determination of sulfur content 60 (USD) via email in 1-3 business day ABOLISHED
GB 4333.4-1988 Methods for chemica analysis of ferrosilicon-The chromazurol S photometric method for the determination of aluminium content 45 (USD) via email in 1-3 business day ABOLISHED
YB/T 178.4-2000 Methods for chemical analysis of silicon-aluminium alloy and silicon-barium-aluminium alloy The sodium periodate spectrophotometric method for the determination of manganese content 60 (USD) via email in 1-3 business day ABOLISHED
GB 7730.3-1987 via email in ABOLISHED please email coc@codeofchina.com for quotation
GB 223.17-1989 Methods for chemical analysis of iron steel and alloy; The diantipyrylmethane photometric method for the determination of titanium content 75 (USD) via email in 1-3 business day VALID
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