ISO 11475:2017 PDF

Scope: This document specifies the procedure to be used for determining the whiteness of papers and boards. The values obtained correspond to the visual appearance of white papers and boards with or without fluorescent whitening agents when they are viewed under the CIE D65 daylight standard illuminant. It is based on reflectance data obtained over the full visible spectral range (VIS) in contrast to the measurement of ISO brightness which is limited to the blue region of VIS. In addition, it specifies a method for adjustment of the UV content to correspond to the CIE D65 daylight illuminant[10][11], insofar as results obtained when fluorescent whitening agents are present are dependent upon the UV content of the radiation falling upon the sample. It is specific for white fluorescent paper samples where the emission due to the fluorescent whitening agent (FWA) occurs in the blue region of the visible spectrum. This method is not applicable to coloured papers containing fluorescent dyes. This document should be read in conjunction with ISO 2469. NOTE 1 This document is based on the CIE whiteness formula, published in CIE 15.3-2004[9]. NOTE 2 A related International Standard, ISO 11476, specifying the procedure for obtaining values corresponding to the appearance of these products under indoor illumination, has also been published.

ISO 11475:2017 Referenced Document

ASTM E308-08 Standard Practice for Computing the Colors of Objects by Using the CIE System*， 2024-04-20 Update
CIE 15-2004 Colorimetry (Third Edition; ***For (SDO) Subscription Customers Only ***)
CIE S 017-2011
ISO 11476:2016 Paper and board - Determination of CIE whiteness, C/2° (indoor illumination conditions)
ISO 11664-1:2007 Colorimetry - Part 1: CIE standard colorimetric observers
ISO 11664-2:2007 Colorimetry - Part 2: CIE standard illuminants
ISO 186:2002 Paper and board - Sampling to determine average quality
ISO 2469:2014 Paper, board and pulps - Measurement of diffuse radiance factor (diffuse reflectance factor)
ISO 2470-2:2008 Paper, board and pulps - Measurement of diffuse blue reflectance factor - Part 2: Outdoor daylight conditions (D65 brightness)
ISO 3688:1999 Pulps - Preparation of laboratory sheets for the measurement of diffuse blue reflectance factor (ISO brightness)
ISO 4094:2005 Paper, board and pulps - International calibration of testing apparatus - Nomination and acceptance of standardizing and authorized laboratories
ISO/TR 24498:2006 Paper, board and pulps - Estimation of uncertainty for test methods

2017 ISO 11475:2017 Paper and board - Determination of CIE whiteness, D65/10 degrees (outdoor daylight)
2004 ISO 11475:2004 Paper and board - Determination of CIE whiteness, D65/10 degrees (outdoor daylight)
1999 ISO 11475:1999 Paper and board - Determination of CIE whiteness, D65/10° (outdoor daylight)