basic principle of freeze drying

• 

The basic principle of is based on the three-state change of water. Water has solid, liquid and gaseous states, and the three states can be converted and coexist. At the same time, water, ice, and water vapor can coexist and balance each other. Under the high vacuum state, the sublimation principle is used to make the moisture in the pre-frozen material not be melted by the ice, and is directly removed into the water vapor by the ice state, thereby achieving the purpose of freeze-drying.

The lyophilized product has a sponge shape, no shrinkage, excellent rehydration, and very little water content. After storage, it can be stored and transported at room temperature for a long time. Since vacuum freeze-drying has unparalleled advantages in other drying methods, it has become more and more popular since its inception, and has become increasingly popular in medicine, biological products and food. Biological products such as serum, strains, Chinese and Western medicine are mostly biologically active substances, and vacuum freeze-drying technology also provides a good solution for preserving biological activity.

The drying box is a vacuum sealed low-pressure container. The materials are all made of stainless steel. They can withstand positive and negative pressures. They meet the requirements of steam sterilization. The seals are made of high temperature resistant and low temperature resistant silicone rubber. The insulation layer is made of closed foam elastic insulation material. The rectangular box with high rate has a drain port at the bottom and an observation window on the side. The box is also equipped with a pressure gauge, a temperature measuring resistor, a venting valve, an infiltration valve, a safety valve and a spray inlet joint.

The energy required for the cooling and opening of the food is transmitted to the shelf through the heat exchange medium and then to the food. The shelf is made of special hollow splint, which has high strength and good sealing. The shelf assembly is installed in the freeze-drying box through the bracket, and a plate layer is set as the heat radiation compensation plate on the uppermost layer to ensure that the space of the food in the box is in the same temperature environment, and the sides and the back of the shelf are both Set the rails to prevent the food tray or food from coming off the shelf.

If you have the needs of freeze dryers, freeze dryers, etc., you need to know the quotation, Please go to to find the or : Contact us, we will contact you in the first time.

Другие товары поставщика

	LGJ-30F Standard Type Experimental Freeze Dryer	Technical parameters 　　freeze drying area：0.4㎡ 　　tray dimensions：295×335mm 　　tray numbers：4pcs 　　shelf dimensions：300×340mm 　　shel...
	LGJ-12 top-press type	Thisfreezedryeriswidelyusedinmedicine,pharmacy,biologyresearch,chemicalindustryandfoodproduction,etc.Afterthefreezedryingprocess,along term preserv...
	LGJ-20F Gland Type Experimental Freeze Dryer	Freezing and drying process of LGJ-20F (silicon oil heating) are finished in the same place (patented product). It changes the cumbersome operation...
	LG-50 production food freeze dryer	March means that spring has come, the earth has melted the snow and ice, and the warm sun has gradually climbed into the sky with the rain and th...
	floor model manifold freeze dryers	The is used by many companies in the summer to purchase a suitable floor model manifold freeze dryer for their air compressor room. The floor model...

Похожие товары

	Контроль и установка контейнера	Продавец: 821678	Guangdong Inspection and Testing Co., Ltd. является одним из ведущих сторонних поставщиков услуг ...
	Контроль и установка контейнера	Продавец: 821678	Guangdong Inspection and Testing Co., Ltd. является одним из ведущих сторонних поставщиков услуг ...
	CLONED CARDS+ FRESH DUMPS+PIN,	Продавец: cardersdrives	Sell Fresh Dumps CCV+FULLZ GIFTCARDS Credit Cards CLONECARDS ALL COUNTRY LIVE 100%Dumps CVV Fresh...
	AFEN европейский торговый автомат с лапшой для чашки горячего и холодного кофе с монетой	Продавец: Hunan Aifeng Vending Machine Co., Ltd.	Model AF-60GC4 Name Cup noodle vending machine Capacity ...
	AFEN 24-часовой автоматический аптечный магазин самообслуживания, медицинский шкафчик, торговый автомат	Продавец: Hunan Aifeng Vending Machine Co., Ltd.	Model AF-ZK(22SP)+AF-BLH-19S Dimension H:1940mmW:397mmD:320mm Power AC100V-240...