ÖNORM EN ISO 28199-3

ISO 28199 provides a method for the evaluation of coating materials in research, development and production with regard to their suitability and safety for industrial processes, and error analysis. The properties of coating materials and coatings to be evaluated depend on the film thickness, so a coating system of increasing thickness is applied to a test panel under defined conditions. The following characteristics are measured (in ISO 28199-1): film thickness in accordance with ISO 2808; surface texture; colour in accordance with ISO 7724 (all parts). In combination with visual assessment, the following properties are determined: colour stability, process hiding power, re-dissolving, overspray absorption, wetting, surface texture and mottling (ISO 28199-2); tendency toward sagging, formation of bubbles, pinholing and hiding power (this part of ISO 28199). This part of ISO 28199 specifies visual methods for the assessment of tendency toward sagging, formation of bubbles, pinholing and hiding power of coating materials applied to a test panel under defined conditions.