Particle fineness Calmax is mined from high quality limestone in Kenya. It is a very fine grade product with about 80% less than 150 microns (0.15mm) and 65% less than 45 microns (0.45mm). Its quality results in high solubility and faster reaction in the soil. Chemical Properties Calmax is about 80% calcium in the form of carbonates. Compound % in Calmax CaO 49.1 CaCO3 87.8 MgO 2.16 MgCO3 4.52 Al2O3 0.44 Fe2O3 0.02 K2O 0.01 Na2O 0.09 SiO2 0.50 LOl 44.25 Applications and functions. • Fertiliser • Increase the pH value of the soil • It increases Calcium content of the deficit Soil • The smaller and uniform particle size of “Calmax “ easily mixes with the soil and provides Ca to the plant/crop at an early age.