PORTAFILL A40 is a micronized functional filler used as an alternative to barium sulfate in powder coatings. PORTAFILL A40 has a mean particle size of 11.5 microns and provides benefits for powder coatings such as being less prone to water spotting compared to barium sulfate. PORTAFILL A40 has high purity, brightness and chemical inertness making it suitable for outdoor and chemical applications. PORTAFILL A40 is guaranteed by an ISO 9001 quality plan and closely monitored chemical composition and particle size distribution provide consistent performance for various end use applications.