What is described herein relates to the use of a dense membrane module as pathogen barrier as well as the use of at least one dense membrane module and/or at least one nanoporous membrane module in a method for the continuous, processing of a healthcare product, a method for the continuous, pathogen-reduced, modular processing of a healthcare product, wherein at least one dense membrane module and/or at least one nanoporous membrane module is employed for degassing and/or debubbling a fluid stream, wherein the fluid stream is passed over the membrane module characterized in that the fluid stream is passed from top to bottom over the membrane module and a unit operation for the continuous, pathogen-reduced, modular processing of a healthcare product comprising at least one dense membrane module and/or at least one nanoporous membrane module.
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