| Grade | AMT-1 | AMT-2 |
| Purity Min.(wt. %) | 99.95 | 99.90 |
| WO3 MIN.(wt. %) | 83.0 | 83.0 |
| Impurity Max.(wt.%) | ||
| Al | 0.001 | 0.001 |
| As | 0.001 | 0.001 |
| Bi | 0.0001 | 0.0001 |
| Ca | 0.001 | 0.003 |
| Cr | 0.001 | 0.001 |
| Cu | 0.001 | 0.003 |
| Fe | 0.002 | 0.003 |
| K | 0.0015 | 0.002 |
| Mg | 0.001 | 0.002 |
| Mn | 0.001 | 0.001 |
| Mo | 0.005 | 0.01 |
| Na | 0.0015 | 0.002 |
| Ni | 0.001 | 0.001 |
| P | 0.001 | 0.003 |
| Pb | 0.0001 | 0.0001 |
| S | 0.0005 | 0.001 |
| Sb | 0.001 | 0.002 |
| Si | 0.001 | 0.002 |
| Sn | 0.0001 | 0.0003 |
| Ti | 0.001 | 0.002 |
| V | 0.001 | 0.002 |
| Insoluble in water | 0.5 | 0.5 |
| PH value | 3.0-4.5 | 3.0-4.5 |
More details of ammonium metatungstate product, please visit website: http://ammonium-metatungstate.com/
Please contact CHINATUNGSTEN for inquiry and order of ammonium metatungstate:
Email: sales@chinatungsten.com
Tel.: 86 592 5129595
