5 Factors To Be Considered When Choose Lab Scientific Freeze Dryer

Freeze drying is to first freeze the gel or blood to be dried into solids and then vaporize the water in it through sublimation under reasonable conditions to remove the water. Since the ice gasification process will not affect the agglomeration state of solid particles, the original particles can be kept intact without being compressed and agglomerated. In addition, lab scientific freeze dryer is very suitable for processing biological products, such as blood, because it does not have high temperature operations and can prevent the deterioration of biological products.

With the wide application of freeze-drying technology in various fields, purchasing lab scientific freeze dryer has become an important issue for many application companies. How to choose the right lab scientific freeze dryer? Five factors are to be considered when choosing scientific freeze dryer.

1. Cold trap temperature
The cold trap is a device placed between the freeze-drying chamber and the corrosion-resistant vacuum pump to trap steam. The lower the temperature of the cold trap, the stronger the capture capacity of the cold trap, but the lower the temperature of the cold trap, the higher the requirement for refrigeration, and the relatively high machine cost and operating cost.

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 scientific freeze dryer

2. Condensation amount
The amount of steam that the cold trap can capture is related to the total amount of water or other solvent sublimation in the laboratory’s daily experimental operation samples.

3. Ultimate vacuum
The ultimate vacuum is an indicator of the league and pumping efficiency. The vacuum degree of the experiment operation should be within a reasonable range. If the vacuum degree is too high, it is not conducive to heat transfer, and the drying speed decreases.

The ultimate vacuum degree reflects the leakage of the lab scientific freeze dryer and the pumping efficiency of the vacuum pump.

4. Control display system
The freeze-drying machine of laboratory series is mainly used for freeze-drying of materials, small batch production and freeze-drying process condition test, and so on. The control system must have the real-time display of freeze-drying process parameters, such as cold trap temperature, vacuum, stage time, and total process time; set, modify and effectively execute freeze-drying process procedures; have a communication interface to facilitate data collection and storage.

5. Freeze-drying method and function
According to specific samples, there are different options for freeze-drying. Common laboratory freeze-drying experiments all adopt such method: freeze-drying in the freeze-drying cavity or freeze-drying in a bottle.

If it is freeze-drying, you need to buy a freeze-drying cavity, and you need to do lyophilization of vials and choose a capping device.

if it is a hanging bottle freeze-drying, you should choose a multi-manifold, which is suitable for round-bottom flasks, wide-mouth filter flasks, or ampoules, but pay attention to whether you need to choose the corresponding adapter to combine.

If the samples involved in the user test are both lyophilized in the cavity and lyophilized in an external bottle, you can choose a lyophilized cavity with an external hanging port.

Different experiments and different samples have different functional requirements for lab scientific freeze dryers. Generally speaking, shelf-type lab scientific freeze dryers are generally recommended for freeze-drying samples of food, Chinese herbal medicine, powder materials, etc.; but for the operation of vials, you must choose lab scientific freeze dryers with capping device; It is recommended to use the hanging bottle type for freeze-drying preservation of microorganisms and be sure to choose the ampoule adapter for freeze-drying; If you want to study the freeze-drying process curve, you must choose the model of the controller that can support the eutectic point test device and software.

HAWACH is customer-oriented and is committed to helping customers provide overall experimental solutions. By continuously optimizing the company’s operations and improving the quality of service, it has won wide recognition from customers. For more cost-effective lab scientific freeze dryers, welcome to contact HAWACH team( email: info@hawch.com; phone call: +86-29-89284429 ).