Prezentul standard stabile?te metodele de determinare a con?inutului de fosfor din cocs ?i semicocs ?i anume :
— metoda volumetric? ;
— metoda colorimetric?, ?n dou? variante : I ?i II.
?n caz de litigiu, metoda va fi stabilit? prin contract.
STAS 9621-1982 history
1982STAS 9621-1982 COKE AND SEMICOKE Determination of phosphorus content
1974STAS 9621-1974 COKE AND SEMICOKE Determination of phosphorus content