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ISO 1391-3:1976

Withdrawn
Withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

Paraformaldehyde for industrial use Methods of test Part 3: Determination of iron content 2,2'- Bipyridyl photometric method
Available format(s)

Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users

Withdrawn date

26-02-2019

Language(s)

English, French

Published date

01-12-1976

Conversion of iron contained in a test sample to sulphate by treatment with hot sulphuric acid. Oxidation of the iron present in the solution by hydrogen peroxide and subsequently reduction of the iron(III) by hydroxylammonium chloride. Formation of the coloured complex iron(II)-2,2'bipyridyl in a buffered medium. Photometric measurement of the coloured complex at a wavelength of about 510 nm. - ISO 1391, Parts 1 to 4, replace ISO Recommendation R 1391-1970.

DocumentType
Standard
Pages
2
PublisherName
International Organization for Standardization
Status
Withdrawn

Standards Relationship
NBN T 04 033 : 1983 Identical
NFT 20 751 : 1984 Identical

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$118.72
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