Ahlstrom-Munksjö Grade 240 and 623 are blotting papers manufactured for use in the pulp and paper industry. Grade 240 is recommended for TAPPI T-205 and T-491 test methods. Grade 623 is also a very popular grade used for long-fiber hand sheet applications. Grade 623 absorbs more water at a faster rate.
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| Pulp Test Blotter and Blotting Paper | TAPPI Approved | ||
| Grades | Base Weight g/m² | Total Absorbency g/m² | Absorbency Rate Sec/1ml H20 |
| 240 | 249 | 598 | 13 |
| 623 | 246 | 740 | 5 |