> For the complete documentation index, see [llms.txt](https://rhizobiome.gitbook.io/eiwa-shop-supports-et-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://rhizobiome.gitbook.io/eiwa-shop-supports-et-documentation/les-protocoles-sante-du-sol/extraction-dazote-mineral/nh2o.md).

# NH2O

{% hint style="info" %}
Voir aussi le cahier des protocoles Biofunctool® (en téléchargement dans la rubrique Références)
{% endhint %}

<details>

<summary>Produits disponibles dans la boutique Eïwa shop</summary>

[Consommables](https://shop.eiwa.fr/produit/extraction-dazote-mineral-h2o-consommables/)

[Petit matériel](https://shop.eiwa.fr/produit/extraction-dazote-mineral-h2o-petit-materiel/)

[Instrument ](https://shop.eiwa.fr/produit/agitateur-poxc-nmin/)

</details>

### Objectif et domaine d'application

<mark style="color:blue;">**Ce protocole permet d’extraire les ions nitrates (NO3-) libres du sol à l’eau. Le dosage des ions est ensuite réalisé sur la solution d’extraction avec le Nitrachek 404.**</mark>


---

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