... and weighting agent in drilling, work over and completion fluids. CaCO3 powder / calcium carbonate (F,M,C)1. Advantages1)Acid-soluble ... % HCL98% MinGradeSize Range (BSS mesh)Coarse30-80 MeshFine300 MeshesMedium150 Meshes CaCO3 powder calcium carbonate F,M,C