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The following abbreviations will be used to distinguish the different pulps.
| Abbreviation | Pulp sample |
| BKP | bleached kraft pulp of pine, unrefined |
| BKPR | bleached kraft pulp of pine, refined for 60 min |
| UBKP | unbleached kraft pulp of spruce, unrefined |
| UBKPR | unbleached kraft pulp of spruce, refined for 90 min |
