CaO P2O5 SiO2 ZnO L.O.I
Weight ± CI % 42.2 ± 0.3 44.4 ± 0.3 5.60 ± 0.05 1.36 ± 0.05 6.4 ± 0.1
CI: Confidence interval; n=3; α=0.05; L.O.I.: Lost on ignition at 1000°C.
Table 1: Chemical composition of the material determined by X-ray fluorescence