ISO 4176:1981 PDF
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Fertilizers — Determination of nitrate nitrogen content — Nitron gravimetric method
The method is suitable as a reference method and is applicable to all fertilizers. It consists in precipitating of nitrate ions in acid solution as a complex with nitron reagent, filtrating of the precipitate, drying and weighing.
| Edition | 1981 |
|---|---|
| Published Date | 1981 |
| Published By | International Standardization Organisation |
| Page Count | 3 |
