EUROLAB laboratory provides testing and compliance services within the scope of ISO 2813 standard. This international standard specifies a method for determining the gloss of coatings using three geometries of 20°, 60° or 85°.
The method is suitable for gloss measurement of non-textured coatings on flat, opaque surfaces. Comparative gloss measurements are possible on test samples other than those mentioned above. However, it cannot be ensured that the obtained brightness values correspond to the visual brightness perception.
Gloss is a visual perception that results from looking at surfaces. The specular reflection of objects is even more pronounced when the light is reflected more directionally from the surface. Incoming light is reflected only in the main specular direction on high-gloss surfaces. On matte surfaces, light is not only reflected in the main specular direction, but diffusely scattered at all solid angles. The more uniformly the light is scattered in space, the smaller the density of the directed component and the matter through which the surface appears.
The principle of gloss measurement is based on the measurement of directionally reflected light. In this context, its intensity is measured in a defined angular area around the angle of reflection. The intensity of the reflected light depends on the surface material and the incident angle. Accordingly, more light is reflected on the coated surfaces with increasing incidence angle. The remaining light is refracted at the air/coating interface and diffusion or absorption of light occurs within the coating.
EUROLAB assists manufacturers with ISO 2813 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.
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