| Cu-naphthenate solution. % | Dust quantity (g) | |
| Without naphthenate solution | With naphthenate solution | |
| 0.1 | 12.4 | 4.8 |
| 0.3 | 12.5 | 4.7 |
| 0.5 | 11.8 | 4.9 |
| 0.7 | 12.5 | 5.6 |
| 0.9 | 12.7 | 5.7 |
| 0.11 | 12.6 | 6.1 |
| 0.13 | 13.1 | 8.8 |
| 0.15 | 14.1 | 8.9 |
| 0.17 | 12.6 | 8.6 |
| 0.19 | 12.7 | 8.6 |
| 0.21 | 12.8 | 8.7 |
| 0.23 | 12.9 | 8.6 |
| 0.25 | 13.0 | 8.7 |
| 0.27 | 12.8 | 8.5 |