This section explains the sampling approaches used to detect residues on equipment surfaces and within process systems, including evaluation of sampling efficiency through recovery studies.
1. Purpose and Definition Recovery studies evaluate the ability of a sampling method to remove and detect residues from equipment surfaces or within process systems. They quantify the efficiency of swab and rinse sampling and ensure that analytical results accurately…
1. Purpose and Definition Rinse sampling is an indirect sampling method used in cleaning validation to detect residues remaining within equipment systems after cleaning. It involves collecting a liquid rinse that has contacted internal surfaces and analyzing it for the…
1. Purpose and Definition Swab sampling is a direct surface sampling method used in cleaning validation to detect and quantify residues remaining on equipment after cleaning. It provides localized, site-specific evidence of cleaning effectiveness and is the primary method for…