This practical assignment details the cleaning validation process for a fermentor used in biopharmaceutical production. The report outlines the cleaning procedure, including the use of a standard operating procedure (SOP) and cleaning in place (CIP) methods. It documents the collection and analysis of swab samples from predetermined locations within the fermentor, along with measurements of pH and conductivity from rinse water samples to assess cleaning effectiveness. The report includes discussion of the results, such as the absence of microbial growth in the samples and the protein analysis method. The conclusion emphasizes the importance of validation procedures for ensuring product quality, safety, and efficacy. The report is enriched with references from various scientific journals and publications related to cleaning validation in the pharmaceutical industry. It also includes analysis of protein present in the samples, and concludes with an overall summary of the importance of cleaning and validation in biopharmaceutical manufacturing.