100-cell hinged top plastic boxes made of polypropylene offer an alternative storage system for all microtubes up to 2.0 ml and standard 1.2 ml cryovials.The grid is alpha-numerically matrixed with 1-10 and A-J characters hot stamped directly onto the grid for fast, easy sample identification. Boxes fit into standard freezer racks and are available in natural and five different colours.