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ISO 6382:1981

Withdrawn

Withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

General method for determination of silicon content Reduced molybdosilicate spectrophotometric method

Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Withdrawn date

21-02-2019

Language(s)

English, French

Published date

01-11-1981

€60.00
Excluding VAT

Specifies a method based on the depolymerization of any polymerized silica by treatment with sodium fluoride in the presence of hydrochloride acid resulting in the formation of the oxidized molycdosilicate, followed by the selective reduction of this complex in the presence of oxalic acid and in a sulphuric acid medium, and spectrophotometric measurement of the blue-coloured complex at the wavelength corresponding to maximum absorption (about 800 nm).

DevelopmentNote
Also numbered as BS 6337-2(1983) (09/2005)
DocumentType
Standard
Pages
5
PublisherName
International Organization for Standardization
Status
Withdrawn

Standards Relationship
NFT 20 058 : 82 FD Identical
NBN EN 1302 : 1999 COR 2002 Identical
NBN T 02 206 : 1982 Identical
PN ISO 6382 : 2000 Identical

BS EN 1302:1999 Chemicals used for treatment of water intended for human consumption. Aluminium-based coagulants. Analytical methods

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