A laboratory cell washer is a specialised instrument used to clean and prepare cell samples for further analysis. It operates by using a series of washing steps to remove unwanted debris, such as proteins or other contaminants, from cell suspensions. This process ensures that the remaining cells are in their purest form, enhancing the accuracy and reliability of subsequent tests. Typically employed in research, clinical diagnostics, and quality control labs, cell washers are essential for maintaining the integrity of cell-based assays. They help in preparing samples for flow cytometry, immunoassays, and other cellular analyses, making them crucial for accurate experimental outcomes and diagnostic precision.