- Reusable, non-toxic formula returns to gel state on thawing
- Structured gel formulation minimizes leakage
- Provides 15% longer protection than standard gel packs
U-tek®’s -23ºC (-10ºF) have superior protection for shipping temperature-sensitive materials while maintaining critical temperatures of serums, test samples, live or frozen tissues, organs, and pharmaceuticals for extended periods. The package is laminated, has a metallized film exterior that provides an excellent heat barrier, and is capable of resisting punctures.