Simple system for cooling samples or for rapid freezing, defrosting and heating. Cooling box, cooling block or cryoblock and cooling module are the perfect combination. Directions for use Pre-cool the cooling block or cryoblock and cooling module at -20/-80 °C and keep samples cool in the cooling module for several hours on the laboratory bench. Alternatively, the cooling box can be filled with approx. 200 g of dry ice. The cooling module itself does not require any pre-cooling in this case. Do not keep the cooling box in the freezer. Cooling system FreezeBox Cryogenic Application Pre-cool the cryoblock for at least six hours at -20 °C or at least three hours at -80 °C. Duration of use: three hours (open lid) or five hours (closed lid). Operating temperature approx. -18 to +4 °C. Delivery incl. cooling box, cryoblock and cooling module.