What do I have to do about broken slides or coverslips? FAQ Report A: Broken coverslips and/or slides have to be removed from the load area and the output rack bay To remove the glass debris, open the side panel and check that the bottom of the rack bay is clean. The left side panel can be opened with a screw-driver or a coin. Glass and glass particles may easily be removed using a brush and slides can just be picked up and removed from the instrument.