Laboratory Equipments / Oct 08, 2018 / (0) / (738) /
In laboratories, freeze-drying of biologically-derived moist materials or solutions in order not to lose their properties is defined as lyophilization. Thus, the material can be stored for too long until it is used. This is done in the freeze dryer machines.
Freeze Dryer Specifications
Freeze dryers follow some steps during drying. First, the material to be dried is frozen under the eutectic point. The eutectic point is the point where the solid-containing solution passes completely into the solid form. After the freezing process, the solvent inside the frozen material is primed by sublimation of the ice crystals. When the capacitor reaches the desired temperature, the vacuum pump is opened to reduce the system pressure. Nearly 90% of the solvent is removed in this step. This is the longest process. Secondary drying takes place under higher temperature and stronger vacuum. Thus, more strongly bonded solvents are also removed. After all these steps, the material having a long shelf life is used in water or solvent when it is used again.
Feeze dryers are highly resistant to vacuum to provide the required drying speed. All internal equipment is made of corrosion resistant materials. In the Freeze dry main body, there is a high capacity container made of stainless steel. Enables the efficient use of energy in the drying process. This cabinet contains shelves where the materials will be placed. The heat that is fed in the drying process on the shelves uses the heat homogenously as it passes through the surface of the material to the interior. In the meantime, the melted ice passes directly into the water vapor phase due to the low pressure. The cabin doors are extremely durable to prevent any airflow from outside. Outside the cab is a vacuum pump that provides a low pressure environment. It has progressive cooling technology. There are safe systems to be informed about the process of drying. The device ensures consistent and high-quality results. Freezer dry, an integrated system that meets economic, safe and environmental criteria, also simplifies documentation and reduces delivery time. The collector temperature and vacuum level displayed on the touch screen can be viewed on the touch screen.