| 摘要 |
The invention relates to a cooling device (1) for indirectly cooling biological material, in particular for cryopreserving biological material, comprising a closable cooling chamber (10) in which a heat exchange surface of a heat exchanger is arranged for indirection cooling, through which heat exchanger nitrogen can be circulated, the temperature in the cooling chamber (10) being adjustable to a value of less than -40°C. |
