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ISO 5314:1981 (R2017)
Fertilizers — Determination of ammoniacal nitrogen content — Titrimetric method after distillation
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Summary
The method consists in distilling of the ammonia from an alkaline solution, absorbing in an excess of standard volumetric sulphuric acid solution and back-titrating with standard volumetric sodium hydroxide solution. It is applicable only in the absence of urea or its derivatives, of cyanamide and of organic nitrogenous compounds.
Notes
90.92 : Norme internationale à réviser
Technical characteristics
| Publisher | International Organization for Standardization (ISO) |
| Publication Date | 05/01/1981 |
| Confirmation Date | 09/06/2017 |
| Edition | 1 |
| Page Count | 4 |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
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01/05/1981
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