Modular processing system and method for the modular construction of a processing system

A modular processing system for biopharmaceutical processes, said modular processing system comprising:

• at least one first processing unit and at least one second processing unit, configured to fluidically connect to each other;
• at least one adapter plate configured to control at least one fluid flow from the first processing unit to the second processing unit;
• such that the fluid flow between the first processing unit and the second processing unit is deflected at least partially by the adapter plate, and/or the fluid flow is controlled with the adapter plate in an open loop flow or in a closed loop flow,
• wherein the adapter plate has an adapter channel configured to direct the fluid flow into the adapter channel through at least two inlet openings and out of the adapter channel through at least two outlet openings,
• wherein at least a first of the inlet openings is arranged such that the fluid flow flows out of an outflow channel of the first processing unit into the adapter channel,
• wherein at least a second of the inlet openings is arranged such that the fluid flow flows out of an inflow channel of the first processing unit into the adapter channel,
• wherein at least a first of the outlet openings is arranged such that the fluid flow flows out of the first outlet opening into an outflow channel of the second processing unit, and
• wherein at least a second of the outlet openings is arranged such that the fluid flow flows out of the second outlet opening into an inflow channel of the second processing unit.