Standard Svensk standard · SS-EN 13523-22

Bandlackerade metaller - Provningsmetoder - Del 22: Kulörskillnad - Visuell jämförelse

Status: Upphävd

· Ersätts av: SS-EN 13523-22:2010
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Standard Svensk standard · SS-EN 13523-22

Bandlackerade metaller - Provningsmetoder - Del 22: Kulörskillnad - Visuell jämförelse
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Omfattning
This Part of EN 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 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.

Ämnesområden

Färg- och ljusmätning (17.180.20) Organiska ytbeläggningar (25.220.60)


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Standard Svensk standard · SS-EN 13523-22

Bandlackerade metaller - Provningsmetoder - Del 22: Kulörskillnad - Visuell jämförelse
Prenumerera på standarden - Läs mer Dölj
Pris: 636 SEK
standard ikon pdf

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Pris: 636 SEK
standard ikon

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Produktinformation

Språk: Engelska

Framtagen av: Svenska institutet för standarder

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

Artikelnummer: STD-34475

Utgåva: 1

Fastställd: 2003-08-22

Antal sidor: 8

Ersätts av: SS-EN 13523-22:2010