Vacuum Filtration “rapid”-Filtermax The family of the TPP vacuum filtration rapid-Filtermax stands out not just because of its quadratic form, but also its excellent product features. Features of the “rapid” Filtermax large quadratic filter surface of 49 cm2 and 69 cm2 respectively is 20 % larger than with similar volume units with circular membranes premium PES filter membrane, pore size of 0.22 µm high flow rate low protein binding, excellent chemical resistance secure footprint: flask with its sturdy square footprint is difficult to tip over during filtering and therefore eliminates the risk of encompassment of the filter unit by the vacuum tubing quadratic form stores more efficiently media with less wasted space than circular bottles