NF U42-051

NF U42-051

November 1968
Published document Cancelled mandatory application standard
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Fertilizers. Theory of sampling and batch evaluation.

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Main informations

Collections

National standards and national normative documents

Publication date

November 1968

Number of pages

50 p.

Reference

NF U42-051

ICS Codes

65.080   Fertilizers

Classification index

U42-051

Print number

1 - 01/11/1981
Table of contents
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  • AVANT PROPOS
    3
  • I. - OBJET
    6
  • II. - OBSERVATIONS PRÉLIMINAIRES
    6
  • III. - THÉORIE GÉNÉRALE APPLICABLE AUX GRANDS LOTS
    7
  • 1. - Problème central
    7
  • 2. - Problèmes secondaires
    8
  • 3. - Principe du test de Student
    9
  • 4. - Recherche d'un plan d'échantillonnage
    10
  • IV. - THÉORIE COMPLÉMENTAIRE APPLICABLE AUX PETITS LOTS
    16
  • 1. - Considérations particulières
    16
  • 2. - Théorie
    16
  • 3. - Exemple numérique
    18
  • 4. - Estimation des petits lots
    20
  • 5. - Détermination de la limite entre "grands" et "petits" lots
    20
  • V. - EXAMEN DE QUELQUES PROBLÈMES D'APPLICATION
    21
  • 1. - Considérations générales
    21
  • 2. - Cas des engrais composés sur lesquels plusieurs éléments sont à contrôler
    27
  • 3. - Cas des engrais très homogènes
    28
  • ANNEXES
    30
  • ANNEXE I. - PLAN OPTIMAL D'ÉCHANTILLONNAGE
    30
  • ANNEXE II. - ÉLÉMENTS POUR LE CALCUL DE B0
    31
  • ANNEXE III. - PLAN D'ÉCHANTILLONNAGE DANS LE CAS DES PETITS LOTS
    32
  • ANNEXE IV. - VALEUR DE D0
    32
  • ANNEXE V. - ÉTUDE EXPÉRIMENTALE DE LA DISPERSION DES FABRICATIONS
    33
  • ANNEXE VI. - CONTRÔLE DE L'HOMOGÉNÉITÉ DU LOT ET CALCUL DE LA PUISSANCE DU TEST DE CONTRÔLE DES TITRES
    45
  • ANNEXE VII. - TABLE POUR LE CALCUL DE LA PUISSANCE DU TEST DE STUDENT.
    48
  • GRAPHIQUES I A VIII
    36
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