The Clinical 4-Way Tube Rack is the only tube rack specifically designed to hold round, flat and conical blood collection and culture tubes * Accommodates all brands of 13 and 17 mm round, flat and conical bottom blood collection & culture tubes * Customize the rack to fit the number of wells required, infinite units can be linked together or use one standalone unit * Molded alphanumeric identification for quick location and retrieval of tubes * Made from robust polypropylene that is chemical resistant and easy to clean * Racks can be used in water baths and placed in freezers * Holds multiple tubes without multiple racks * US Patent No. D900337 SPECIFICATIONS: * Autoclavable: True * Color: Natural * Dimensions (L x W x H): 9.1 x 2.8 x 3.8 in (23.2 x 7.0 x 9.5 cm) * Material: Polypropylene * No. of Wells: 12, 18, 12, 18 * Quantity: Pack of 5 * Well Diameter: 13, 13, 17, 17 mm