Laboratory glassware washers have specialized features to meet the laboratory's demand for superior cleaning and convenience. Glassware Washers have top and bottom racks that accommodate accessory inserts for a wide variety of glassware shapes and sizes, primarily beakers and other wide-mouth glassware. Glassware Washers have a spindle rack that holds up primarily narrow-neck glassware such as volumetric flasks. All racks are interchangeable among washers.