International Standard
ISO 2469:2024
Paper, board and pulps — Measurement of diffuse radiance factor (diffuse reflectance factor)
Reference number
ISO 2469:2024
Edition 6
International Standard
Read sample
ISO 2469:2024
Published (Edition 6, 2024)

ISO 2469:2024

ISO 2469:2024
CHF 151
Convert Swiss francs (CHF) to your currency


This document describes the general procedure for measuring the diffuse radiance factor of all types of pulp, paper and board. More particularly, it specifies in detail the procedures to be used for calibrating the equipment, and in Annex A, the characteristics of the equipment to be used for such measurements.

This document can be used to measure the diffuse radiance factors and related properties of materials containing fluorescent whitening agents, provided that the UV-content of the instrument illumination has been adjusted to give the same level of fluorescence as a fluorescent reference standard for a selected CIE illuminant, according to the International Standard describing the measurement of the property in question.

Annex C describes the preparation of fluorescent reference standards.

General information

  •  : Published
     : 2024-03
    : International Standard published [60.60]
  •  : 6
     : 28
  • ISO/TC 6
    85.040  85.060 
  • RSS updates

Got a question?

Check out our Help and Support

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)