上海知信臺(tái)式冷凍干燥機(jī)ZX-LGJ-1

Desk freeze dryer

ZX-LGJ-1型

儀器選型：

樣品蒸發(fā)、干燥、濃縮和純化的方法，常用的有：

■高溫、常壓條件下的蒸餾和旋轉(zhuǎn)蒸發(fā)方法，但僅能處理單一樣品。

■低溫下快速蒸發(fā)，氮吹化方法，但處理樣品少，操作復(fù)雜。

■室溫、真空條件下蒸發(fā)，真空離心濃縮方法，對(duì)樣品有條件要求。

■低溫、高真空條件下冷凍干燥機(jī)方法，升華保持樣品活性，耗時(shí)較長(zhǎng)。

真空冷凍干燥機(jī)廣泛用在醫(yī)學(xué)制藥，生物研究，化工和食品等領(lǐng)域。經(jīng)冷凍干燥處理的物品易于長(zhǎng)期保存，給水后能回復(fù)到凍干前狀態(tài)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.