ISO 5314:1981
Fertilizers — Determination of ammoniacal nitrogen content — Titrimetric method after distillation
| Edition date: |
1981-05-01
In Force
|
|---|---|
| Available languages: | English, French |
| 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. |
| ICS: | 65.080-Fertilizers |
| CTN: | ISO/TC 134 - 52376 |
|
Standards Cancellations |
Es anulada por ISO/DIS 5314 |










