NF ISO 5631-1

NF ISO 5631-1

February 2016
Standard Cancelled

Paper and board - Determination of colour by diffuse reflectance - Part 1 : indoor daylight conditions (C/2°)

ISO 5631-1:2015 specifies a method for measuring the colour of paper and board by the diffuse reflectance method with the elimination of specular gloss.ISO 5631-1:2015 is not applicable to coloured papers or boards which incorporate fluorescent dyes or pigments. It may be used to determine the colour of papers or boards which contain fluorescent whitening agents provided the UV content of the illumination on the test piece has been adjusted to conform to that in the CIE illuminant C, using a fluorescent reference standard that fulfils the requirements for international fluorescent reference standards of level 3 (IR3) as prescribed by ISO 2469 with an assigned ISO brightness value (C/2°) provided by an authorized laboratory, as described in ISO 2470‑1.

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Main informations

Collections

National standards and national normative documents

Publication date

February 2016

Number of pages

21 p.

Reference

NF ISO 5631-1

ICS Codes

85.060   Paper and board

Classification index

Q03-104-1

Print number

1

International kinship

ISO 5631-1:2015
Sumary
Paper and board - Determination of colour by diffuse reflectance - Part 1 : indoor daylight conditions (C/2°)

ISO 5631-1:2015 specifies a method for measuring the colour of paper and board by the diffuse reflectance method with the elimination of specular gloss.

ISO 5631-1:2015 is not applicable to coloured papers or boards which incorporate fluorescent dyes or pigments. It may be used to determine the colour of papers or boards which contain fluorescent whitening agents provided the UV content of the illumination on the test piece has been adjusted to conform to that in the CIE illuminant C, using a fluorescent reference standard that fulfils the requirements for international fluorescent reference standards of level 3 (IR3) as prescribed by ISO 2469 with an assigned ISO brightness value (C/2°) provided by an authorized laboratory, as described in ISO 2470‑1.

Replaced standards (1)
NF ISO 5631-1
December 2009
Standard Cancelled
Paper and board - Determination of colour by diffuse reflectance - Part 1 : indoor daylight conditions (C/2°)

ISO 5631-1:2009 specifies a method for measuring the colour of paper and board by the diffuse reflectance method with the elimination of specular gloss. ISO 5631-1:2009 is not applicable to coloured papers or boards which incorporate fluorescent dyes or pigments. It may be used to determine the colour of papers or boards which contain fluorescent whitening agents provided the UV content of the illumination on the test piece has been adjusted to conform to that in the CIE illuminant C, using a fluorescent reference standard provided by an ISO/TC 6 authorized laboratory, as described in ISO 2470-1.

Standard replaced by (1)
NF ISO 5631-1
October 2022
Standard Current
Paper and board - Determination of colour by diffuse reflectance - Part 1 : Indoor daylight conditions (C/2°)

This document specifies a method for measuring the colour of paper and board by the diffuse reflectance method with the elimination of specular gloss. This document is not applicable to coloured papers or boards which incorporate fluorescent dyes or pigments. It may be used to determine the colour of papers or boards which contain fluorescent whitening agents provided the UV content of the illumination on the test piece has been adjusted to conform to that in the CIE illuminant C, using a fluorescent reference standard that fulfils the requirements for international fluorescent reference standards of level 3 (IR3) as prescribed by ISO 2469 with an assigned ISO brightness value provided by an authorized laboratory, as described in ISO 2470‑1.

Table of contents
  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes et définitions
  • 4 Principe
  • 5 Appareillage
  • 6 Échantillonnage et conditionnement
  • 7 Préparation des éprouvettes
  • 8 Mode opératoire
  • 9 Calcul
  • 10 Expression des résultats
  • 11 Fidélité
  • 12 Rapport d'essai
  • Annexe A Caractéristiques spectrales des réflectomètres pour déterminer les composantes trichromatiques
  • Bibliographie
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