Cal Carb Poultry Grit is a large grind carbonate with a particle size larger than Cal Carb 0, Cal Carb 325, and Cal Carb Supercal - Glass Rock.
It can be used in combination with other sized carbonates to provide a wide spectrum of bridging agents for drilling fluids. Its acid solubility also makes it especially suitable as a weighting or bridging agent in completion/work over and stimulation operations.