Ink Precipitate Calcium Carbonate Powder is used as an extender and opacifying agent in the ink industry such as printing ink. The precipitated calcium carbonate consists of two main phases, sols (type I) and big aggregates (type II). The Carbonate Precipitate has a high surface area and particle size distribution, based on one’s requirement. It is typically used for pigment grinding to control printability, improve stability and impart brightness.