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.NOTE Results might differ between natural and artificial daylight.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 (using CIE Standard Illuminants D65 and A) should be made, in accordance with EN 13523-15.No stat
DS/EN 13523-22:2010 history
2010DS/EN 13523-22:2010 Coil coated metals - Test methods - Part 22: Colour difference - Visual comparison