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EVS-EN 13523-3:2014

Coil coated metals - Test methods - Part 3: Colour difference - Instrumental comparison

General information
Withdrawn from 01.11.2021
Base Documents
EN 13523-3:2014
Directives or regulations
None

Standard history

Status
Date
Type
Name
01.11.2021
Main
04.08.2014
Main
01.07.2001
Main
EVS-EN 13523-3:2001
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.
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