UltraCruz® Microcentrifuge Tube Rack hold small vials and microcentrifuge tubes suitable for various laboratory applications. Microcentrifuge Tube Rack is reversible and can hold up to 96 (0.5 ml) vials on one side or 96 (1.5 - 2.0 ml) microcentrifuge tubes on the other. Microcentrifuge Tube Racks are great for sample storage, thawing, cooling, or use in a microcentrifuge. Made of durable polypropylene, they can be put in an autoclave. Microcentrifuge Tube Racks are molded with an alphanumeric grid for easy tube identification. They are available in green, pink, yellow, and orange.