ISO 4279:1977
Withdrawn
Aluminium fluoride for industrial use — Determination of sodium content — Flame emission spectrophotometric method
Hardcopy , PDF
English, French
11-01-1977
02-14-2019
Applicable to products having Na contents, expressed as Na2 O, of equal to or more than 0.05 % (m/m). The principle bases on fusion, at a controlled temperature, of a test portion with a mixture of lithium carbonate and boric oxide or with a mixture of lithium carbonate and lithium tetraborate in a platinum or platinum-gold alloy crucible. Extraction of the fused mass with hydeochloric acid solution. Aspiration of the solution into a flame and photometric measurement of the intensity of the radiation emitted at 589 nm.
| Committee |
ISO/TC 47
|
| DevelopmentNote |
Also numbered as BS 4993-7(1980). (07/2005)
|
| DocumentType |
Standard
|
| Pages |
4
|
| PublisherName |
International Organization for Standardization
|
| Status |
Withdrawn
|
| Standards | Relationship |
| NBN T 03 446 : 1983 | Identical |
| NFT 20 161 : 84 FD | Identical |
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