Er2O3 /TREO (% min.) | 99.9999 | 99.999 | 99.99 | 99.9 | 99 |
TREO (% min.) | 99.5 | 99 | 99 | 99 | 99 |
Loss On Ignition (% max.) | 0.5 | 0.5 | 1 | 1 | 1 |
Rare Earth Impurities | ppm max. | ppm max. | ppm max. | % max. | % max. |
Tb4O7/TREO Dy2O3/TREO Ho2O3/TREO Tm2O3/TREO Yb2O3/TREO Lu2O3/TREO Y2O3/TREO | 0.1 0.1 0.2 0.5 0.5 0.5 0.3 | 2 5 5 2 1 1 1 | 20 10 30 50 10 10 20 | 0.01 0.01 0.035 0.03 0.03 0.05 0.1 | 0.05 0.1 0.3 0.3 0.3 0.1 0.6 |
Non-Rare Earth Impurities | ppm max. | ppm max. | ppm max. | % max. | % max. |
Fe2O3 SiO2 CaO Cl- CoO NiO CuO | 1 10 10 50 2 2 2 | 2 10 30 50 2 2 2 | 5 30 50 200 5 5 5 | 0.003 0.01 0.02 0.03 | 0.005 0.02 0.02 0.05 |