The DIN EN ISO 13803-2004 standard specifies a method for the determination of Paints and varnishes film reflection gloss at 20 degree conditions. This standard applies to the evaluation of gloss for non-textured coatings on flat, opaque substrates and is related to the 20 degree gloss measurement method in ISO 2813. It aims to improve the degree of discrimination between high Gloss surfaces, especially in the field of evaluating dispersion properties. This method provides an important standard for mass assessment of Coatings decorative properties such as automotive coatings, where reflection haze is taken into account in addition to Color and gloss.