Designing Disposable Single Use Filling Lines for Minimizing Losses and Maximizing Yield

The advent of ready to use single use filling line has revolutionized the fill-finish process for sterile injectables, enabling faster product changeovers and reducing risks related to cleaning validation and cross-contamination. However, concerns remain around E&L, particulate contamination, variable fills, adsorption, and product loss, especially with high-value drugs.

These challenges can be addressed by careful material selection, Efficient design, and monitoring and Control of Particulate Matter during manufacture of these complex single use systems.

Careful Selection of Materials

Careful selection of single-use components with low extractables is crucial to minimize leachable risks, avoiding costly redesigns and delays. At MDI, our advanced analytical labs offer extractables profiling and toxicological assessments to identify target leachables. To address product loss from adsorption, especially in low-volume or high-value drug; we provide validation services to evaluate component compatibility and recommend surface modifications or material change, or flush volumes to ensure label claim compliance.

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PUPSIT in Single Use Systems: Challenges and Risk Mitigation

Sterile drug products produced by aseptic processing involve filtration through sterilizing grade filters. It is critical for the drug manufacturer to ensure that the sterilizing filter is integral during the entire filtration process, resulting in a sterile downstream. Regulatory bodies worldwide have therefore made it mandatory to test filter integrity post use and mitigate risk to patient safety.

However, studies* have shown that in some drug products, filter clogging has an impact on post use integrity test (Bubble Point) values, thereby highlighting the possibility of a non integral filter passing post use integrity test due to masking of pre-use flaws.

All this has resulted in a heightened focus on Pre-Use Post-Sterilization Integrity Testing(PUPSIT) and most of the regulatory bodies have made it mandatory. However, with the ever increasing use of single use systems (SUS) in the manufacture of sterile drug products, PUPSIT has become even more challenging.

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