BS ISO 2469:2014

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Photometric calibration of the instrument
   and its working standards
7 Sampling
8 Preparation of the test pieces
9 Procedure
10 Calculation and expression of results
11 Precision
12 Test report
Annex A (normative) - Instruments for the
        measurement of radiance factor
Annex B (normative) - Calibration
        service - Photometric calibration
Annex C (normative) - Calibration service - UV-adjustment
Annex D (informative) - Measurement uncertainty
Annex E (informative) - Radiance and reflectance
Bibliography

Defines the general procedure for measuring the diffuse radiance factor of all types of pulp, paper and board.

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 AnnexA the characteristics of the equipment to be used for such measurements, and in AnnexB 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 instrument illumination has been adjusted to give the same level of fluorescence as a fluorescent reference standard for a selected CIE illuminant, in accordance with the specific International Standard describing the measurement of the property in question.

This International Standard describes in AnnexC the preparation of fluorescent reference standards, although the procedures for using these standards are not included, since their use is described in detail in the specific International Standards describing the measurement of the properties of materials containing fluorescent whitening agents.