[Filter sterilization and penetration battery].
Currently sterilising filtration is one of the most commonly used techniques in the Pharmaceutical Industry. Some doubts and misunderstandings can, however, arise from certain aspects of this consolidated and well-known technology. Some examples? Does speaking about 0.2 or 0.22 um necessarily mean a sterilising filter? What are 0.1 um filters? How well do we understand the phenomenon of bacterial penetration in sterilising filters?