NF EN ISO 4630-2

NF EN ISO 4630-2

March 2005
Standard Cancelled

Clear liquids - Estimation of colour by the Gardner colour scale - Part 2 : spectrophotometric method

ISO 4630-2:2004 specifies a method for estimating, by means of the Gardner colour scale, the colour of clear, yellow/brown liquid products using colour-measuring instruments. The results may be invalid if other products are tested. The test uses the Gardner colour scale described in ISO 4630-1, which describes a visual method. The method is applicable to drying oils, varnishes and solutions of fatty acids, polymerized fatty acids, resins, tall oil, tall oil fatty acids, rosin and related products. The method described provides a more precise way of measuring Gardner colour than that described in ISO 4630-1. It is applicable to products having colours from Gardner 1 to Gardner 18. The Gardner scale is not applicable to products with colours lighter than 1 or darker than 18.

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Main informations

Collections

National standards and national normative documents

Publication date

March 2005

Number of pages

12 p.

Reference

NF EN ISO 4630-2

ICS Codes

71.040.50   Physicochemical methods of analysis
87.060.20   Binders

Classification index

T20-030-2

Print number

1 - 17/03/2005

International kinship

ISO 4630-2:2004

European kinship

EN ISO 4630-2:2004
Sumary
Clear liquids - Estimation of colour by the Gardner colour scale - Part 2 : spectrophotometric method

ISO 4630-2:2004 specifies a method for estimating, by means of the Gardner colour scale, the colour of clear, yellow/brown liquid products using colour-measuring instruments. The results may be invalid if other products are tested. The test uses the Gardner colour scale described in ISO 4630-1, which describes a visual method.

The method is applicable to drying oils, varnishes and solutions of fatty acids, polymerized fatty acids, resins, tall oil, tall oil fatty acids, rosin and related products.

The method described provides a more precise way of measuring Gardner colour than that described in ISO 4630-1. It is applicable to products having colours from Gardner 1 to Gardner 18. The Gardner scale is not applicable to products with colours lighter than 1 or darker than 18.

Replaced standards (1)
NF T20-030
September 1985
Standard Cancelled
Chemical products for industrial use. Transparent liquids. Visual assessment of colouration by the gardner colour scale.

Cette norme s'adresse aux personnes qui sont confrontées aux méthodes d'analyse des propriétés physico-chimiques des produits chimiques à usage industriel et en particulier ici à la coloration des produits chimiques fortement colorés, une des spécifications généralement retenues dans les fiches techniques des produits industriels.

Standard replaced by (1)
NF EN ISO 4630
March 2016
Standard Current
Clear liquids - Estimation of colour by the Gardner colour scale

<p>ISO 4630:2015 specifies a method for estimating the colour of optically clear, yellow/brownish coloured liquid products by means of the Gardner colour scale using colour-measuring instruments. The method uses the Gardner colour scale described in Annex A.</p> <p>It is applicable to drying oils, varnishes and solutions of fatty acids, polymerized fatty acids, resins, tall oil, tall oil fatty acids, rosin and related products. The results might be invalid if other products are tested.</p> <p>The method described provides a more precise way of measuring Gardner colour than a visual sample comparison using human eyes. It is applicable to products having colours from Gardner 1 to Gardner 18. The Gardner scale is not applicable to products with colours darker than 18. For products with colours lighter than Gardner 1 the method specified in ISO 6271 applies.</p>

Table of contents
View the extract
  • 1 Domaine d'application
    1
  • 2 Références normatives
    1
  • 3 Principe
    1
  • 4 Appareillage et matériaux
    1
  • 5 Échantillonnage
    2
  • 6 Mode opératoire
    2
  • 7 Expression des résultats
    2
  • 8 Fidélité
    2
  • 9 Rapport d'essai
    3
  • Annexe A (normative) Calcul de la couleur Gardner à partir des coordonnées trichromatiques
    4
  • Bibliographie
    6
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