ISO 7408:1983
Fertilizers — Determination of ammoniacal nitrogen content in the presence of other substances which release ammonia when treated with sodium hydroxide — Titrimetric method
OVERVIEW
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.
COMMENTS
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PRODUCT DETAILS
| Status | Current |
|---|---|
| Edition | 1983 |
| No. of Pages | 5 |
| ICS Classification | 65.080 Fertilizers |
| Committee | ISO/TC 134 |
| Available for Purchase | For sale in Singapore only |
| Adoption | ISO |