Technical Report No. 41 (Revised): Virus Retentive Filtration, provides a summary of best practices for utilization of virus filtration in process development and manufacturing. It explains what virus filters are and where they can be used in current and emerging bioprocesses. Recommendations for selection of a suitable virus filter are presented, and strategies for evaluating and validating virus retention by virus filtration are discussed. TR 41 also includes considerations that reflect best practices and current thinking for implementing virus filtration into novel manufacturing technologies. \n
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