I am looking for a 96-well Filter plate used for a bead-based assay that can be locked onto the top of a deep well plate for centrifugation. We have had some issues with the filter plates shifting during centrifugation or being placed on the deep-well plates in the wrong orientation. Both of these mistakes lead to failure of the assay and waste a lot of money, therefore we would like to avoid them as much as possible. Does anyone know where I might be able to find a product like this? Or possibly a filter plate that can only be placed on a deep-well plate in one orientation?