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AS/NZS 1050.21:1994

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Methods for the analysis of iron and steel – Determination of cobalt content (spectrophotometric method)
standard by Australian/New Zealand Standards, 01/01/1994

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Specifies a spectrophotometric method for the determination of cobalt content up to 12% in all grades of iron and steel containing less than 10.0% copper. The sample is dissolved in acid and nitroso-R-salt added. This forms a red-brown chromophore which is measured spectrophotometrically at 580 nm.

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