Product features: 1. Suitable for drying small amounts of samples, cooling temperature -80 ℃, dehumidification capacity 150ml/cycle; 2. The cooling system uses helium refrigerant to prevent damage to the ozone layer.; 3. The operation panel displays information such as vacuum degree, cooling temperature, and running time at a glance; 4. In automatic mode, the instrument automatically detects the temperature and vacuum degree of the cold trap, and notifies the experimenters to assemble the sample. 5. The time for restarting after power on can be set to ensure that the equipment can continue to operate after power on, and the vacuum pump will not automatically start after power on.