The neoLab Cold Box safeguards expensive heat-sensitive enzymes or samples. This handy box is made of a polystyrene base with a cover. The insert holds 12 1.5 ml microtubes. The interior of the Cold Box is filled with a special material that guarantees low temperature for safe storage and transport of samples.
Simply freeze the Cold Box at -20°. A temperature of -15° will then be maintained for about 1.5 hours. The temperature rises to 0° after another 5 hours.