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  • BSI
    BS EN 13523-15:2015 Coil coated metals. Test methods - Metamerism
    Edition: 2015
    $273.55
    / user per year

Description of BS EN 13523-15:2015 2015

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 Δ E (instrumental colour difference for a given illuminant, see EN 13523-3 ) 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 ).

Excluded from this method are organic coatings producing fluorescence and/or which are multicoloured, pearlescent or metallic.



Standard NumberBS EN 13523-15:2015
TitleCoil coated metals. Test methods - Metamerism
StatusWithdrawn
Publication Date2015-07-31
Withdrawn Date2021-10-21
ReplacesBS EN 13523-15:2002
Replaced ByBS EN 13523-3:2021
Identical National Standard OfEN 13523-15:2015
DescriptorsOrganic coatings, Coatings, Colorimetry, Colour tests, Spectrophotometry, Metals, Coils
ICS25.220.60 Organic coatings, 17.180.20 Colours and measurement of light
CommitteeSTI/21
ISBN978 0 580 84652 6
PublisherBSI
Pages14



About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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