ProteinOne recombinant proteins in solution are temperature sensitive and must be stored at -80^oC to prevent degradation. Avoid repeated freeze / thaw cycles and keep on ice when not in storage.
(The exception to this rule is the Active Protein Array kit, which should be stored at 4^oC.)

Our products are shipped with Dry Ice and special safety precautions for handing dry ice should be followed. After each use, freeze unused protein products with liquid nitrogen and store in -80^oC.