Pleated (Fluted) Filter Paper/32cm

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Ahlstrom-Munksjö offers a full range of standard pleated grades that meet your needs from grades with rapid flow rates for filtration of viscous materials to grades with tight matrices for removal of fine precipitates. Ahlstrom-Munksjö’s pre-pleated grades can save valuable time and maximize the efficiency of the laboratory filter system. Pleating improves the effective surface area increasing flow rate and loading capacity thus decreasing filtration time. Pleated circles are available in 12.5 cm to 50 cm diameters.

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
View Ahlstrom Guide for More Information