Cryogenic labels are specialized identification systems engineered to remain securely attached, legible, and machine-readable on containers subjected to ultra-low temperatures, typically down to −196 °C in liquid or vapor-phase nitrogen, and often through subsequent thawing, chemical exposure, and repeated freeze–thaw cycles. Their performance depends on the coordinated design of three components—the facestock, the adhesive, and the printed image—each of which must tolerate the thermal and mechanical stresses of cryogenic storage.
Applications
Cryogenic labels are used for identifying and tracking biological samples, specimens, and cell cultures in cryogenic biorepositories; labeling cryogenic vials and tubes containing drugs, vaccines, and other pharmaceutical substances; identifying patient samples, tissues, and specimens in clinical laboratories; and labeling cryogenic containers and packages for the safe transport of temperature-sensitive materials. They are applied to cryovials, microtubes, test tubes, glass vials, beakers, and metal racks, as well as to cardboard and polycarbonate storage boxes destined for liquid nitrogen tanks, −80 °C freezers, and dry ice transport. In regulated biobanking and cell-therapy manufacturing, printed 1D and 2D barcodes on cryogenic labels provide the machine-readable identity that links a vial to its records in a laboratory information management system, supporting audit trails and chain of custody.
