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Norm

ÖNORM EN 13523-22

Issue date: 2010 05 15

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

This European Standard specifies the procedure for determining the difference in the colour of an organic coating on a metallic substrate by visual comparison against a ...
Withdrawn: 2017 04 01
This European Standard specifies 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. It might be that two colour specimens will match in daylight but not under another light source. This phenomenon is known as metamerism (see EN 13523-15). If metameric match is to be reported in objective terms, spectrophotometric measurements 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 should be used where possible, in some cases a visual comparison can be useful (evaluation of colour matches, inspection of metallic colours, etc.). The standardization of such visual comparisons, by light sources, illuminating and viewing geometry and specimen size, provides for improved uniformity of results. This practice is essential for critical colour matching and is highly recommended for colour inspections.
ÖNORM EN 13523-22
2017 04 01
Coil coated metals - Test methods - Part 22: Colour difference - Visual comparison
Norm
ÖNORM EN 13523-22
2010 05 15
Coil coated metals - Test methods - Part 22: Colour difference - Visual comparison
Norm
ÖNORM EN 13523-22
2003 08 01
Coil coated metals - Test methods - Part 22: Colour difference - Visual comparison
Norm
Norm
ÖNORM EN 13523-0
Issue date : 2001 04 01
Coil coated metals - Test methods - Part 0: General introduction and list of test methods
Norm
ÖNORM EN ISO 3668
Issue date : 2001 11 01
Paints and varnishes - Visual comparison of the colour of paints (ISO 3668:1998)
Norm
ÖNORM EN 13523-22
Issue date : 2017 04 01
Coil coated metals - Test methods - Part 22: Colour difference - Visual comparison