Norm

NEN-EN 13523-3:2012 Ontw. en

Bandgelakte metalen - Beproevingsmethoden - Deel 3: Kleurverschil - Instrumentele vergelijking

  • Deze norm is ingetrokken sinds 26-06-2014

16,10

Over deze norm

Status Ingetrokken
Aantal pagina's 9
Commissie Verfwaren
Gepubliceerd op 01-10-2012
Taal Engels
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.

Details

ICS-code 25.220.60
Nederlandse titel Bandgelakte metalen - Beproevingsmethoden - Deel 3: Kleurverschil - Instrumentele vergelijking
Engelse titel Coil coated metals - Test methods - Part 3: Colour difference - Instrumental comparison
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