�(zhì)量標(biāo)�(zhǔn)
4N / 3N / AR
�(xiàng)� 高純4N�(jí)
稀土純度: ≥99.99%
稀土雜�(zhì)� ≤100ppm
La2O3 �10ppm;
CeO2 �10ppm;
Pr6O11 �20ppm;
Sm2O3 �10ppm;
Eu2O3 �10ppm;
Gd2O3 �5ppm;
Tb4O7 �2ppm;
Dy2O3 �2ppm;
Ho2O3 �2ppm;
Er2O3 �2ppm;
Tm2O3 �2ppm;
Yb2O3 �2ppm;
Lu2O3 �2ppm;
Y2O3 �5ppm