Standard Swedish standard · SS-EN 13523-15:2015

Coil coated metals - Test methods - Part 15: Metamerism

Status: Withdrawn

· Replaced by: SS-EN 13523-3:2021
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Standard Swedish standard · SS-EN 13523-15:2015

Coil coated metals - Test methods - Part 15: Metamerism
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Scope
This Part of EN 13523 defines terms of the procedure for determining the metamerism of a colour match of an organic coating on a metallic substrate.
When two colour specimens have identical spectral reflection curves, they are matching under any illuminant irrespective of its spectral characteristics. This is termed a "spectral match". It is also possible for two colour specimens having different spectral reflection curves to match visually under a given light source but not to match under another light source with different spectral characteristics; such matches are termed "metameric".
One quantitative description of metamerism is the so-called "metamerism index".
The information of the metamerism index is of limited value where ?E (instrumental colour difference for a given illuminant, see EN 13523-3:2001) is > 0,5. The metamerism index is not suited for determining the absolute colour difference or colour constancy of a given specimen at change of illuminant.
The colour difference under the reference illuminant is to be measured in colour coordinates L*, a* and b* (see EN 13523-3:2001).
Excluded from this method are organic coatings producing fluorescence and/or which are multicoloured, pearlescent or metallic.

Subjects

Properties of surfaces (17.040.20) Organic coatings (25.220.60)


Buy this standard

Standard Swedish standard · SS-EN 13523-15:2015

Coil coated metals - Test methods - Part 15: Metamerism
Subscribe on standards - Read more Dölj
Price: 636 SEK
standard ikon pdf

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Product information

Language: English

Written by: Svenska institutet för standarder

International title:

Article no: STD-8014855

Edition: 2

Approved: 7/12/2015

No of pages: 20

Replaces: SS-EN 13523-15

Replaced by: SS-EN 13523-3:2021