We offer a comprehensive range of Ahlstrom-Munksjö pleated fluted laboratory filter papers designed to meet the stringent requirements of scientific research. Our lab-grade filter papers are available in standard grades that facilitate rapid flow rates, making them ideal for filtering viscous materials, as well as tighter matrices for effective removal of fine precipitates.
Our Ahlstrom-Munksjö pre-pleated fluted laboratory grades enhance operational efficiency of the laboratory filter system, saving valuable time in the filtration process. The pleated design increases the effective surface area, significantly improving flow rate and loading capacity, which reduces overall filtration time.
Available in diameters from 12.5 cm to 50 cm, our pleated filter circles are engineered for optimal performance in diverse laboratory applications.
| Grade | Filter paper base | Retention in µm |
Filtration Speed Herzberg sec/100mls |
Filtration Speed Rapidity mls/min |
Loading Capacity |
| 542 | 642 | 2 | 229 | 30 | Medium |
| 550 | 950 | 2 | 491 | 14 | Medium |
| 519 | 909 | 3 | 105 | 65 | Medium |
| 509 | 609 | 4 | 85 | 80 | Medium |
| 513 | 613 | 6 | 114 | 60 | Medium |
| 515 | 615 | 25 | 29 | 235 | High |
| 562 | 962 | 27 | 28 | 245 | High |
| 505 | 905 | 28 | 26 | 265 | Medium |
| 517 | 617 | 35 | 19 | 360 | Very High |