The boxes are made of high quality polypropylene in natural or other colors. They are available with heights of 52 or 75 mm. These ratiolab^® Cryo Boxes are particularly practical and flexible due to their removable grid inserts.

The separate naturally-colored inserts are available in five sizes and can thus be used with sample vessels of differing diameters. The inserts fit all ratiolab^® Cryo Boxes. Cleaning of the boxes and the inserts is much simpler than with Cryo Boxes with permanently fitted inserts.