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Normas BSI – AENOR
BS EN 13523-3:2014

BS EN 13523-3:2014

Coil coated metals. Test methods. Colour difference. Instrumental comparison

Fecha:
2014-06-30 /Under Review
Comité:
STI/21
Equivalencias internacionales:

EN 13523-3:2014

Relación con otras normas BSI:

Reemplaza a: BS EN 13523-3:2001

Resumen:
This part of EN 13523 specifies procedures for determining the instrumental colour difference (CIELAB) of an organic coating on a metallic substrate. Establishing a standard as well as the magnitude of an acceptable colour difference are not covered by this method. Two appropriate methods are given in this part of EN 13523: a) instrumental colour difference measurement using a tristimulus colorimeter; b) instrumental colour difference measurement using a spectrophotometer or equivalent. Care shall be taken when measuring e.g. - textured surfaces; - fluorescent coatings; - metameric coatings; - multi-coloured, pearlescent, metallic or special colour effect coatings. In order to determine whether metamerism is present, the metamerism index is determined (see EN 13523-15) and/or a visual examination (see EN 13523-22) is performed with different artificial light sources.
Keywords:
Colour tests, Organic coatings, Spectrophotometry, Coatings, Coils, Colorimetry, Comparative tests, Metals
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