ISO 6382:1981
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.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
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
21-02-2019
English, French
01-11-1981
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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Withdrawn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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