NF EN ISO 6271

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".

See more
View the extract
Main informations

Collections

National standards and national normative documents

Publication date

March 2016

Number of pages

12 p.

Reference

NF EN ISO 6271

ICS Codes

87.060.20   Binders

Classification index

T20-031

Print number

1

International kinship

ISO 6271:2015

European kinship

EN ISO 6271:2015
Sumary
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".

Replaced standards (2)
NF EN ISO 6271-1
March 2005
Standard Cancelled
Clear liquids - Estimation of colour by the platinum-cobalt scale - Part 1 : visual method

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

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.

Table of contents
  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Principe
  • 4 Appareillage et matériaux
  • 5 Échantillonnage
  • 6 Mode opératoire
  • 7 Expression des résultats
  • 8 Fidélité
  • 9 Rapport d'essai
  • Annexe A Étalons de couleur platine-cobalt
  • Bibliographie
New: UPSELL service
- The UPSELL service allows you to easily update one of your standards.
- With a single click, add a new language, the Requirements or Redline+ service and add one or more additional users.
- Whether you are in the process of acquiring a standard or it is already available in your personal space, the UPSELL service is available at every stage to help you understand it and implement it within your organization.
Need to identify, monitor and decipher standards?

COBAZ is the simple and effective solution to meet the normative needs related to your activity, in France and abroad.

Available by subscription, CObaz is THE modular solution to compose according to your needs today and tomorrow. Quickly discover CObaz!

Request your free, no-obligation live demo

I discover COBAZ