| Fraction | DOC (%) | |||||
| Cefni | S1 | S2 | S3 | S4 | S5 | SD |
| Hydrophobic Acid | 36.6 | 37.2 | 37.9 | 34.3 | 36.6 | 1.3 |
| Hydrophobic Base | 0.8 | 1.1 | 0.8 | 1.2 | 0.8 | 0.2 |
| Hydrophilic Acid | 26.8 | 27.2 | 27.1 | 26.1 | 27.2 | 0.5 |
| Hydrophilic Base | 1.1 | 0.9 | 1.1 | 1.1 | 0.9 | 0.1 |
| Non-retained Neutrals | 29.9 | 19.9 | 28.0 | 27.7 | 28.9 | 4.0 |
| % Total Recovery | 95.2 | 86.3 | 94.8 | 90.5 | 94.5 | 3.8 |
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| Conwy | S1 | S2 | S3 | S4 | S5 | SD |
| Hydrophobic Acid | 38.8 | 40.9 | 38.9 | 38.1 | 37.6 | 1.3 |
| Hydrophobic Base | 0.3 | 0.3 | 0.6 | 0.8 | 0.5 | 0.6 |
| Hydrophilic Acid | 21.3 | 21.1 | 20.3 | 21.3 | 20.1 | 0.2 |
| Hydrophilic Base | 0.9 | 1.1 | 0.9 | 1.2 | 0.9 | 0.1 |
| Non-retained Neutrals | 33.9 | 32.7 | 35.0 | 36.2 | 34.7 | 1.3 |
| % Total Recovery | 95.2 | 96.1 | 95.7 | 97.6 | 93.8 | 1.4 |