The PolarSafe polycarbonate storage boxes work in conjuciton with the 2D tubes to provide automatic identification of both the box and stored vials. Each box features a 2D Datamatrix code on the bottom of the box as well as a laser engraved Code 128 barcode on the side. These boxes are available in "short" (for 2mL tubes) or "tall" designs (for 5mL tubes). White grid and blue grid options are available for quick and easy identification.