Freeze drying freeze drying is the

冷冻干燥冷冻干燥是通过在高真空下升华冷冻样品来去除水分或脱水剂的过程。冻干是基于样品冰的升华，也就是说，水直接从固态变为气态，而没有中间液态，并且样品的气相和液相之间没有表面张力，从而降低了损坏过程中样品的干燥过程。冷冻干燥有两种方法，即含水样品的直接冷冻干燥和脱水样品的冷冻干燥。水样本的直接冷冻干燥：一种常规方法。放入防冻液中：将样品浸入防冻液中数小时。常见的防冻剂是10％至20％的二甲基亚砜或15％至40％的甘油。突然冷却：

冷冻干燥冷冻干燥是通过在高真空中升华冷冻样品来去除水分或脱水剂的过程。嗜酸性是以样品冰的升华为基础的，即水直接从固体状态向气体状态变化，没有中间的液态，样品的气体和液相之间没有表面张力，从而减少了样品在破坏过程中的干燥过程。冷冻干燥有两种方法，即直接冷冻干燥含水样品和冷冻干燥脱水样品。水样直接冷冻干燥：一种传统方法。放置防冻液：将样品浸入防冻剂中数小时。常见的防冻剂是10%至20%二甲基硫化物或15%至40%甘油。突然冷却：使用保护剂处理的样品被迅速放入氟冷藏剂中，用液氮预冷至（150°C），以快速冻结样品中的水。

Freeze drying freeze drying is the process of removing moisture or dehydrating agent by sublimating the frozen sample in a high vacuum. Lyophilization is based on the sublimation of the sample ice, that is, the water changes directly from a solid to a gas state, without an intermediate liquid state, and there is no surface tension between the gas and liquid phases of the sample, thus reducing the drying process of the sample during the damage process. There are two methods of freeze-drying, namely, direct freeze-drying of water-containing samples and freeze-drying of dehydrated samples. DIRECT FREEZE-DRYING OF WATER SAMPLES: A conventional method. Place in antifreeze: Immerse the sample in antifreeze for several hours. Common antifreeze agents are 10% to 20% Dimethyl sulfoxide or 15% to 40% glycerin. Sudden Cooling: The sample treated with a protective agent is rapidly placed in a freon refrigerant precooled to (150 ° C) with liquid nitrogen to rapidly freeze the water in the sample.<br>