M00000210
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ISO 2469 5th Edition, August 1, 2014 Paper, board and pulps - Measurement of diffuse radiance factor (diffuse reflectance factor)
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Availability date: 07/13/2021
Description / Abstract:
This International Standard describes the general procedure for
measuring the diffuse radiance factor of all types of pulp, paper
and board. More particularly, it specifies in detail in Annex A the
characteristics of the equipment to be used for such measurements,
and in Annex B the procedures to be used for calibrating that
equipment.
This International Standard may be used to measure the diffuse
radiance factors and related properties of materials containing
fluorescent whitening agents, provided that the UV-content of the
instrume t illumination has been adjusted to give the same level of
fluorescence as a fluorescent reference standar i for a selected
CIE illuminant, in accordance with the specific International
Standard describing t measurement of the property in question.
This International Standard describes in Annex C the preparation
of fluorescent reference standard although the procedures for using
these standards are not included, since their use is described i
detail in the specific International Standards describing the
measurement of the properties of materia s containing fluorescent
whitening agents.