A compact, convenient substitute for ice buckets. The Carolina® Chill Block keeps perishable enzymes and other samples handy and cold, without degradation due to temperature increase or fluctuation. The 2-sided design offers flexible storage options, accommodating various quantities of tubes, strips, and/or plate. Simply place the Carolina® Chill Block in a freezer overnight. It will then maintain samples at approximately 0° C for up to 4 hours.