NF U42-111

NF U42-111

February 2013
Standard Current

Potash fertilizers - Determination of potassium content - Flame photometric method

Le présent document décrit une méthode de dosage du potassium dans les engrais potassiques par photométrie de flamme.

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Main informations

Collections

National standards and national normative documents

Publication date

February 2013

Number of pages

13 p.

Reference

NF U42-111

ICS Codes

65.080   Fertilizers

Classification index

U42-111

Print number

1 - 25/01/2013
Sumary
Potash fertilizers - Determination of potassium content - Flame photometric method

Le présent document décrit une méthode de dosage du potassium dans les engrais potassiques par photométrie de flamme.
Replaced standards (1)
NF U42-111
May 1960
Standard Cancelled
Potash fertilizers. Determination of potassium content by flame photometry.

Table of contents
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  • Avant-propos
    5
  • 1 Domaine d'application
    6
  • 2 Références normatives
    6
  • 3 Échantillonnage et préparation de l'échantillon
    6
  • 4 Principe
    6
  • 5 Réactifs
    7
  • 5.1 Acide sulfurique
    7
  • 5.2 Solutions-étalons de chlorure de potassium
    7
  • 6 Appareillage
    8
  • 6.1 Photomètre à flamme
    8
  • 6.2 Matériel de conservation des solutions-étalons
    10
  • 6.3 Matériel courant de laboratoire
    11
  • 7 Mode opératoire
    11
  • 7.1 Prise d'essai
    11
  • 7.2 Préparation de la solution initiale
    11
  • 7.3 Essai préliminaire
    12
  • 7.4 Préparation de la solution à analyser
    12
  • 7.5 Dosage
    12
  • 8 Expression des résultats
    12
  • 8.1 Expression
    12
  • 8.2 Précision des résultats
    13
  • 9 Procès-verbal d'essai
    13
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