| Concentration % | Time mins | Acid | Initial Weight gm | Final Weight gm | Weight Dissolved in Acid gm |
| 5% | 60 | Hydrochloric | 788.7 | 781.8 | 6.9 |
| 5% | 60 | Nitric | 778.7 | 772.85 | 5.85 |
| 5% | 60 | Sulphamic | 797.7 | 791.7 | 6 |