This part of EN 13523 describes methods for determining the color difference (CIELAB) of an organic coating on a metallic substrate using instruments. This method is not intended to establis a standard or to determine the magnitude of an acceptable color difference.
NF T37-001-3:2014 Referenced Document
EN 13523-0 Coil coated metals - Test methods - Part 0: General introduction*, 2021-09-30 Update
EN 23270 Paints and Varnishes and Their Raw Materials - Temperatures and Humidities for Conditioning and Testing
EN ISO 11664-4 Colorimetry - Part 4: CIE 1976 L*a*b*Colour space (ISO 11664-4:2008)
NF T37-001-3:2014 history
2014NF T37-001-3:2014 Coil coated metals - Test methods - Part 3 : colour difference - Instrumental comparison