AS/NZS 1050.21:1994 (R2016)

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

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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.RECONFIRMATION NOTICETechnical Committee CH-010 has reviewed the content of this publication and in accordance with Standards Australia procedures for reconfirmation, it has been determined that the publication is still valid and does not require change.Certain documents referenced in the publication may have been amended since the original date of publication. Users are advised to ensure that they are using the latest versions of such documents as appropriate, unless advised otherwise in this Reconfirmation Notice.Approved for reconfirmation in accordance with Standards Australia procedures for reconfirmation on 31 July 2016.Approved for reconfirmation in New Zealand on behalf of the Standards Council of New Zealand on 4 November 2016.The following are represented on Technical Committee CH-010:Australian Aluminium CouncilBureau of Steel Manufacturers of AustraliaInternational Copper Association AustraliaInternational Precious Metals InstituteNational Association of Testing Authorities Australia

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