NF EN ISO 6271-2

NF EN ISO 6271-2

March 2005
Standard Cancelled

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

ISO 6271-2:2004 specifies a spectrophotometric method for estimating the colour, in Pt-Co units, of clear liquids. It is applicable to clear liquids having a colour characteristic similar to those of the reference platinum-cobalt scale specified in ISO 6271-1, which describes a visual method.The method described provides a more precise way of measuring Pt-Co colour than that described in ISO 6271-1.

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Main informations

Collections

National standards and national normative documents

Publication date

March 2005

Number of pages

10 p.

Reference

NF EN ISO 6271-2

ICS Codes

71.040.50   Physicochemical methods of analysis
87.060.20   Binders

Classification index

T20-031-2

Print number

1 - 17/03/2005

International kinship

ISO 6271-2:2004

European kinship

EN ISO 6271-2:2004
Sumary
Clear liquids - Estimation of colour by the platinum-cobalt scale - Part 2 : spectrophotometric method

ISO 6271-2:2004 specifies a spectrophotometric method for estimating the colour, in Pt-Co units, of clear liquids. It is applicable to clear liquids having a colour characteristic similar to those of the reference platinum-cobalt scale specified in ISO 6271-1, which describes a visual method.

The method described provides a more precise way of measuring Pt-Co colour than that described in ISO 6271-1.

Standard replaced by (1)
NF EN ISO 6271
March 2016
Standard Current
Clear liquids - Estimation of colour by the platinum-colbalt colour scale

ISO 6271:2015 specifies a spectrophotometric method for estimating the colour of clear liquids in terms of platinum-cobalt units (Pt-Co units). It is applicable to clear liquids having a colour characteristic similar to those of the platinum-cobalt colour scale specified in Annex A. For products with colours more intense than the Pt-Co stock solution the method specified in ISO 4630 applies. The spectrophotometric method provides a more precise way of measuring Pt-Co colour than a visual sample comparison by human eyes. NOTE The term "Pt-Co colour" used here is preferred over the terms "Hazen colour" and "APHA colour".

Table of contents
  • 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
  • Bibliographie
    4
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