1 DWK Life Sciences Wheaton™ 50-Position Rack with 28.1mm I.D. Wells Vial racks can be stacked even with vials in place. Can be cleaned easily in an automatic washer or autoclaved Promotions are available 2 DWK Life Sciences Wheaton™ 90-Position Vial Rack Save valuable lab space with this stackable and autoclavable vial rack