Made of polypropylene. Resists from -196º C up to 121º C. Sections will hold 81 microtubes (0.5, 1.5 or 2 ml) or cryotubes (1.2 ml) up to 12mm diameter and 42 mm height. The capacity is reduced when storing external screw cryotubes. Alpha numeric grid printed on the base and over the upper rims for a clearer identification of samples. Dimensions with lid: 133 x 133 x 45 mm.