Topic overview

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Contamination control combines facility design, staff practices, process controls, and testing. Good Manufacturing Practice (GMP) relies on controlled facilities, procedures, documentation, and management of changes and deviations. Cleanroom grades, HEPA-filtered airflow, personnel barriers, and environmental monitoring help limit and detect contamination. Water systems require sanitization and routine microbial and endotoxin testing, while sterilization methods are selected and validated for the product. When components cannot be sterilized together, aseptic processing brings them together under controlled conditions. Preservatives may protect some multi-dose or aqueous products, with antimicrobial effectiveness testing used to assess their performance. The lesson also addresses in-process checks, container–closure integrity, and other controls that support product protection.