ISO 5631-2:2008
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Paper and board Determination of colour by diffuse reflectance Part 2: Outdoor daylight conditions (D65/10 degrees)
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
09-23-2021
English, French
12-03-2008
ISO 5631-2:2008 specifies a method for measuring the colour of paper and board by the diffuse reflectance method with the elimination of specular gloss.
It may be used to determine the colour of papers or boards that 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 standard illuminant D65, using a fluorescent reference standard with an assigned CIE whiteness (D65/10) value provided by an ISO/TC 6 authorized laboratory, as described in ISO 11475.
ISO 5631-2:2008 is not applicable to coloured papers or boards that incorporate fluorescent dyes or pigments.
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