CryoStore cryogenic vials are designed for a variety of applications including boiling, freezing and centrifuge applications. Tubes and caps are molded of high density polypropylene and withstand centrifuging speeds up to 17,000 rpm. Tubes are pre-printed with graduations and white marking area. Self standing tubes have interlocking base for use in workstations. Allows for easy one hand capping and uncapping.