Device and method for treating a filtration medium

A device (1) for treating a porous filtration medium (37), the device comprising:

• a receiving unit (2) that includes:
• a receiving part (5) configured to have the porous filtration medium (37 mounted thereon, and
• a base part (6) releasably engaged with the receiving part (5), the base part (6) having opposite first and second ends, the first end facing towards the receiving part (5);
• and the base part (6) defines conical incubation chamber (17) that widens toward the receiving part (5);
• the second end of the base part (6) defining an outlet (3) facing away from the receiving part (5);
• the outlet (3) comprises a projection (24) with an outlet channel (21) extending therethrough;
• and the outlet channel (21) is fluidically connected to the incubation chamber (17);
• and
• a receiving vessel (4) detachably push-fit on the projection (24) of the outlet (3), the receiving vessel (4) containing a solvent (28) for dissolving the porous filtration medium (37) and grinding balls (29) that support cell disruption, wherein the outlet channel (21) of the outlet (3) is an oblong slot with a long direction of the oblong slot being aligned at a right angle to a longitudinal axis (22) of the base part (6), and the oblong slot (22) has a clear width (23) transverse to the long direction thereof that is smaller than an outside diameter of the grinding balls (29).