IMERCARB 20S is a surface treated high brightness ground calcium carbonate produced from high quality crystalline marble. IMERCARB 20S provides 92% brightness and has a tight particle size distribution with d50 of 6.6 um making it well suited for applications requiring excellent opacity and hiding power. Its unique coating allows for improved dispersion, better rheology control and surface properties in formulations. These technical advantages of IMERCARB 20S help deliver enhanced performance in products related to building exteriors.