BS PD ISO/TR 9686:2017 specifies a method for the determination of the mass fraction of carbon and/or sulfur indirect reduced iron by infrared measurement after high-frequency combustion.This method is applicable to mass fractions of carbon between 0,05 % and 2,5 %, and/or mass fractionsof sulfur between 0,001 % and 0,05 % in direct reduced iron.Cross References:ISO 7550ISO 7764:2006 Ed 2ISO Guide 35:2006ISO 10425:2003 (R09) Ed 1ISO/TR 22971:2005 Ed 1ISO 10835:2007 Ed 2
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