SR EN 13523-22:2004

Coil coated metals - Test methods - Part 22: Colour difference - Visual comparison

This Part of prEN 13523 describes the procedure for determining the difference in the colour of an organic coating on a metallic substrate by visual comparison against a standard using either diffuse natural daylight or artificial daylight in a standard booth. NOTE Results may differ between natural and artificial daylight. It may occur that two colour specimens will match in daylight but not under another light source. This phenomenon is known as metamerism (see EN 13523-15). In case a metameric match is to be reported in objective terms, spectrophotometric measurements (using CIE Standard Illuminants D65 and A) should be made, in accordance with EN 13523-15. No statement is made about either the precision or the accuracy of this procedure since the results derived are neither in numerical form nor do they provide a pass/fail evaluation in objective terms. Therefore, this procedure should only be used where the use of colour measuring instruments is not recommendable (evaluation of colour matches, inspection of metallic colours etc.). Although colour measuring instruments sho

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General information

Status : Withdrawn
Approval date : 9/23/2004
Publish date : 9/24/2004
Withdrawal date : 8/31/2010
Number of pages : 11
ICS : 17.180.20 Colour and measurements of light,25.220.60 Organic coatings
Technical Committee : 338 - Adhesives

Relations with other standards:

Normative reference SR EN 23270:2003
Normative reference SR EN 13523-0:2002
Replaced by SR EN 13523-22:2010