Microplate washers are used in many applications such as ELISA, cell-based assays and microsphere-based assays. A dependable washer is quiet, easy to clean and leaves no residue, preventing contamination and reducing background. Formats available are strip washers, full plate washers and combination washer-dispensers. Look for a washer which can handle a variety of plate types, including deep well plates and 96 plates. Safety considerations should include aerosol protection and an emergency stop. Some labs may require washing for biomagnetic separation and vacuum filtration assays; interchangeable wash manifolds are available to suit a variety of washing applications.