| PEG 6000 weight (g) per 6 g of clay | WL | WP | SST (m2/g) |
| 0.00 | 34.43% | 15.63% | 115.12 |
| 0.10 | 30.52% | 15.00% | 120.35 |
| 0.20 | 29.95% | 14.54% | 106.39 |
| 0.30 | 32.10% | 13.41% | 107.27 |
| 0.40 | 32.79% | 12.87% | 125.58 |
| 0.50 | 31.05% | 12.35% | 130.28 |
| 0.60 | 31.44% | 13.81% | 116.86 |