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1、International Standard INTERNATIONAL ORGANIZATION FOR STANOAROlZATlONWlEYHAPO/JHAR OPI-AHHBALW fl0 CTAHPT#3AWWORGANlSATlON INTERNATIONALE DE NORMALISATION Manganese ores and concentrates - Determination of phosphorus content - Extraction-molybdovanadate photometric method Minerais et concentrtk de m
2、anganese - Dosage du phosphore - M ml is the mass, in milligrams, of phosphorus, obtained from the calibration graph; K is the conversion factor for the expression of the phosphorus content on the dry basis. 8.2 Permissible tolerances on results of parallel determinations I Permissible tolerance 1 P
3、hosphorus content % (m/m) % (m/m) From 0,02 to 0,05 0,010 From 0.05 to 0,lO 0,015 From 0,lO to 0,15 0,020 From 0,15 to 0,25 0,025 From 0,25 to 0,W 0,040 From 09 to 1.0 0,050 Three parallel determinations Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/28/2007 07:29:09 MDTNo reproduction or networking permitted without license from IHS -,-,-