| Grade | Impurity Content(ppm,max) | ||||||||||||||
| Nb2O5 | Ta | Fe | Al | Cr | Cu | Mn | Mo | Ni | Si | Ti | W | Pb | Sn | F | |
| FHN-1 | 99.995min | 5 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 10 | 1 | 1 | 1 | 1 | 50 |
| FHN-2 | 99.99min | 15 | 5 | 5 | 2 | 3 | 3 | 3 | 3 | 15 | 3 | 5 | 3 | 3 | 50 |
L.O.I.: 0.10% Appearance: White powder Size: -60 mesh Packing:In steel drums,with inner sealed double plastic bags. | |||||||||||||||
