上海知信台式冷冻干燥机ZX-LGJ-1多歧管压盖型

台式冷冻干燥机

Desk freeze dryer

ZX-LGJ-1型

仪器选型：

样品蒸发、干燥、浓缩和纯化的方法，常用的有：

■高温、常压条件下的蒸馏和旋转蒸发方法，但仅能处理单一样品。

■低温下快速蒸发，氮吹化方法，但处理样品少，操作复杂。

■室温、真空条件下蒸发，真空离心浓缩方法，对样品有条件要求。

■低温、高真空条件下冷冻干燥机方法，升华保持样品活性，耗时较长。

真空冷冻干燥机广泛用在医学制药，生物研究，化工和食品等领域。经冷冻干燥处理的物品易于*保存，给水后能回复到冻干前状态并保持原有生化持性。

Instrument selection:

Sample evaporation, drying, concentration and purification methods are commonly used:

The method of distillation and rotary evaporation under high temperature and normal pressure, but only one sample can be processed.

Rapid evaporation at low temperature, nitrogen blowing method, but the treatment of less samples, complex operation.

Room temperature, vacuum evaporation, vacuum centrifugal concentration method, the samples are conditional requirements.

Under the condition of low temperature and high vacuum, the method of freeze drying machine, the activity of the sample is maintained, and the time is longer.

Under the condition of low temperature and high vacuum, the method of freeze drying machine, the activity of the sample is maintained, and the time is longer.

Vacuum freeze dryers are widely used in medical, pharmaceutical, biological, chemical, food and other fields. After freezing and drying, the articles are easy to be stored for a long time, and the water supply can be returned to the state before the freeze drying and keep the original biochemical characteristics.