20 Microns produces a variety of different Calcium Carbonates under “Micron Carb” Series of different Brightness and Particle Sizes. Ours is a Super White, Highly Pure, Micronized, closely controlled particle size Natural Calcium Carbonate produced from the finest quality resources procured Domestically and Internationally. The unique particle size distribution optimizes particle packing leaving less void space to be filled by expensive resins. It is one of the most widely used Industrial Minerals for a variety of applications and we produce it in a broad range of particle sizes ranging from coarser to finer and ultra-fine sizes depending on the nature of your application it needs to be used in. We also offer customized grades for your requirements available in various packing sizes.