BS 7164-27.2: 1990 ISO 1657:1986 : Chemical tests for raw and vulcanized rubber — Part 27: Methods for determination of iron content — Section 27.2 Photometric method
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This International Standard specifies a 1,10-phenathroline photometric method for the determination of 5 to 1000 mg/kg of iron in uncompounded natural rubber, uncompounded synthetic rubbers which do not contain chlorine, and in the corresponding uncompounded latices.
BS 7164-27.2: 1990 ISO 1657:1986 : Chemical tests for raw and vulcanized rubber — Part 27: Methods for determination of iron content — Section 27.2 Photometric method