Er2O3 99.9% 1.Er2O3 99.9%, REO 99.0% 2.REO Impurity Max 0.1% 3.Other Impurity Fe2O3 0.005%, SiO2 0.005%, CaO 0.01%, Cl- 0.03% Er2O3 99.99% 1.Er2O3 99.99%, REO 99.0% 2.REO Impurity Max 0.01% 3.Other Impurity Fe2O3 0.001%, SiO2 0.003%, CaO 0.001%, Cl- 0.03% Packing 25kgs in cardboard drums
