ISO 7408:1983
Current
The latest, up-to-date edition.
Fertilizers — Determination of ammoniacal nitrogen content in the presence of other substances which release ammonia when treated with sodium hydroxide — Titrimetric method
Hardcopy , PDF
English, French
01-12-1983
The method consists in entraining, by means of a strong current of air, of the ammonia from a moderately alkaline test mixture at ambient temperature into standard volumetric sulfuric acid solution, and back-titrating of the excess sulfuric acid solution with standard volumetric sodium hydroxide solution.
| Committee |
ISO/TC 134
|
| DevelopmentNote |
Also numbered as BS 5551-4.1.4(1984). (08/2005)
|
| DocumentType |
Standard
|
| Pages |
5
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Standards | Relationship |
| BIS IS 6092-2-6 : 2004 | Identical |
| PN ISO 7408 : 1994 | Identical |
| IS 6092 : Part 2 : Sec 6 : 2004(R2014) | Identical |
| NFU 42 125 : 1985 | Identical |
| NFU 42 119 : 1965 | Similar to |
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