Aluminium oxide primarily used for the production of aluminium -- Determination of fluorine content -- Alizarin complexone and lanthanum chloride spectrophotometric method
This International Standard specifies a spectrophotometric method, using alizarin complexone and lanthanum chloride, for the determination of the fluorine content of aluminium oxide primarily used for the production of aluminium. The method is applicable to fluorine (F) contents greater than 0,003 %.