Bel-Art Cryo-Safe Cold Box; For 1.5ml Tubes, 12 Places, Plastic, 4.6 x 4.6 x 2.8 in.

Molded polystyrene container, with cover, has an internal 12-place support for 1.5 ml microcentrifuge tubes. The space surrounding the tubes is filled with a sealed-in material that maintains the low temperature required for safe storage and transport.

• Maintains a -15ºC temperature for 1½ hours when taken out of a -20ºC freezer

• Will remain below 0ºC for 4 hours