Lab Lyophilizer

A laboratory freeze dryer, or lab lyophilizer, is a specialized equipment designed for freeze-drying, or lyophilization, in a controlled laboratory setting. This process involves the removal of water from samples through sublimation, under vacuum conditions, at low temperatures.

The freeze dryer maintains precise temperature and vacuum levels, enabling the effective drying of samples while preserving their biological and chemical integrity. It is widely used in research and development, as well as in the production of pharmaceuticals, biotechnology products, and other materials that require long-term stability without the use of preservatives.

The working principle of the lab lyophilizer is based on the phenomenon of sublimation. It freezes the water substance into a solid state first, and then sublimates the solid water directly into a gas state in a vacuum environment, thereby removing the water and preserving the substance. This process avoids the phenomenon of internal water migration and concentration caused by the evaporation of water on the surface of the substance in the traditional drying method, as well as possible side effects such as foam and oxidation.

The invention of the freeze-drying, which marked the beginning of a new era in sample preservation. This process allowed for the removal of water from samples through sublimation, enabling the preservation of delicate biological and chemical materials without the use of harmful preservatives.

 

Subsequently, the development of the first laboratory freeze dryer represented a significant step forward in the controlled preservation of samples in a laboratory setting. These early machines, although limited in their capabilities, established the foundation for future advancements.

Over time, improvements in temperature control systems were a crucial milestone in the evolution of laboratory freeze dryers. The ability to precisely control and maintain temperatures during the freeze-drying process was essential for ensuring the quality and integrity of the samples.

 

Another significant milestone was the advancement in vacuum technology. The development of more powerful and efficient vacuum pumps allowed for better control of the vacuum conditions within the freeze dryer, further enhancing the efficiency and quality of the freeze-drying process.

More recently, the integration of automation features into laboratory freeze dryers has been a game-changer. Automation not only improves the reproducibility and reliability of the process but also reduces the need for manual intervention, making the operation of these machines more convenient and efficient.

The future of laboratory freeze dryers continues to be promising, with ongoing research and development aimed at further improving their efficiency, reducing energy consumption, and enhancing the preservation of even the most delicate samples. As technology evolves, so will the capabilities of these remarkable machines, enabling new frontiers in scientific research and discovery.

 

Fujian LiXing Food Co., Ltd.

Since its establishment in 2006, Fujian Li Xing has been focusing on the research and development and production of freeze-dried food for nearly 20 years. It has 29 production lines, 6,300 square meters of freeze-drying furnace equipment, and 3 world-class production bases, making it the first in the industry. The company has a nationally recognized and standard food safety testing center - CNAS National Laboratory.

As an independent freeze-dried food brand grown in China, Fujian Li Xing insists on building hard-core competitiveness with technological innovation as its core. In terms of research and development, the company itself has always maintained its ability to develop products and consumer needs, constantly optimized and adjusted technology, and continuously upgraded industry products and experiences, such as better restoration of product flavor and application scenarios. More convenient and diverse, China's freeze-dried food industry can meet the future global food trends of "green", "convenient", "healthy" and "nutritious" while retaining localized innovative features, and lead China's freeze-dried industry to the world stage.

Compared with mature freeze-dried food markets around the world, China's freeze-dried food industry is in an emerging stage, with freeze-dried food consumption of only 40,000 tons. However, as the new generation of consumers shift their demands for food that is both nutritious and convenient, freeze-dried foods that are convenient, fast, rich in taste, and retain the original nutritional value and flavor of food are increasingly favored and sought after by young people.

According to Guo Shusong, general manager of Fujian Li Xing Food Co., Ltd., in recent years, the freeze-drying industry has entered a period of steady and rapid development, with the market size growing at an annual rate of 15%-20%, and total national sales exceeding 50 billion yuan. In the future, the rapidly developing freeze-dried food will become a new growth point in the industry.

 

Fujian Li Xing has continued to increase its investment in the freeze-dried food field in recent years. Based on the technical advantages of years of research and development, and with localization as the fulcrum of innovation, it creates freeze-dried products with Chinese characteristics.

Guo Shusong said frankly in an interview: "As this market continues to be hot, more and more companies are joining this field, but they are not afraid of competition. Only through competition can we better meet consumer demand. Market fluctuations will force us to We will iterate, innovate, and develop more advanced freeze-drying technology to make consumer products that are more in line with localization, so that the value of the freeze-drying industry can be maximized."

In daily life, when people encounter indigestion, constipation and diarrhea, they often choose to supplement with probiotics. Probiotics are a type of active microorganisms that are designed to be implanted in the human body and are beneficial to the host. They can regulate the balance of intestinal flora, enhance immunity, and improve intestinal digestion and absorption. Guo Shusong particularly emphasized that during the product development process, the intervention of today's freeze-drying technology will not "inactivate" the probiotics, but more like enter a "dormant" state. The overall organizational structure and appearance of freeze-dried probiotics are well preserved, and Lixing has made a lot of efforts and work in research and development. For him, he hopes to provide more consumers with health care without losing nutrients. "

Our packaging guarantee ensures that your items are securely wrapped and protected. We use only high-quality materials to safeguard against damage during transit. Our team of experts carefully inspects each package to ensure it meets our strict standards. Trust us for a safe and secure packaging experience.

 

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Sample preparation

 The sample should be prepared to maximize its surface area and ensure that the sample is free of acid and alkali substances and volatile organic solvents.

 The sample must be completely frozen into ice, if there is a residual liquid will cause gasification jet, affecting the drying effect.

Equipment operation

 Before starting the device, check whether the water valve is tight, the air charging valve is closed, and the contact surface between the plexiglass cover and the rubber ring is clean and free of dirt.

 Before starting the vacuum pump, ensure that the vent valve is closed to prevent oil return.

 During the freeze-drying process, temperature and air pressure values should be recorded regularly to monitor the drying process.

Safety protection

 The cold trap temperature of the freeze dryer is very low. Wear thermal gloves during operation to prevent frostbite.

 Follow the relevant safety operation procedures when using, including wearing appropriate protective equipment.

Equipment maintenance

 In general, the equipment should not be run continuously for a long time to avoid overheating or damage.

 After continuous work for a certain period of time (such as 200 hours), the vacuum pump oil should be replaced regularly, and pay attention to maintenance and maintenance.

 After the equipment is shut down, the ice in the cold trap should be completely transformed into water, and then open the outlet valve to drain water, and clean the inner wall of the cold trap with a dry cloth.

Environmental requirement

 Laboratory freeze dryers should work in a dry, ventilated, clean and dust-free environment to avoid contaminating the sample and affecting the drying effect.

 The ambient temperature must not be too high (for example, 28 ° C or 32 ° C) to ensure normal operation of the device.

Other points to note

 Do not switch on and off the power supply and refrigerator frequently. If the refrigerator stops running due to operation errors, wait for a period of time (such as 20 minutes or 3 minutes) before restarting to avoid damage to the refrigerator.

 Before performing any welding operations on or near the freeze-dryer, disconnect the power supply to the PLC and all electronic equipment to prevent damage to the electronic equipment caused by welding arc interference.

 Before operating the equipment, the operator must read the instruction manual carefully. After being trained and qualified, the operator can operate the machine.

As a precise scientific research equipment, the stability of power supply and voltage of the lab lyophilizer is directly related to the normal operation of the equipment and the accuracy of the experimental results. The following will discuss in detail the possible problems that laboratory freeze dryers may encounter in terms of power supply and voltage, as well as their solutions.

Unstable power supply voltage Laboratory freeze dryers have high requirements for the stability of power supply voltage. Generally, the normal working power supply voltage is 215-225 volts (some industrial power supply may be 380 volts). When the power supply voltage is unstable, it will have multiple impacts on the equipment. Abnormal operation of the compressor: Unstable power supply voltage can cause the compressor to fail to work effectively. When the voltage is too low, the compressor may not start. Even if it starts, the operation will slow down significantly and make a humming sound. Excessively high voltage may damage the electrical components of the compressor and shorten the service life of the equipment. Decreased cooling effect: Unstable voltage can affect the normal operation of the refrigeration system, resulting in insufficient cooling capacity and failure to meet the set low-temperature requirements, thereby affecting the freeze-drying effect. Increased equipment failure rate: When exposed to an unstable voltage environment for a long time, the electrical components of the laboratory freeze dryer are prone to damage, increasing the equipment failure rate and raising maintenance costs. Solution: Install voltage stabilizing equipment: When the supply voltage is unstable, an AVR (220V) can be used or a voltage stabilizer can be installed on the original working power supply to ensure that the voltage remains stable within the range required by the equipment. Optimize power supply lines: Check whether there are problems such as aging and poor contact in the power supply lines, and carry out timely maintenance or replacement to reduce voltage loss. Equipped with UPS power supply: For laboratories with high requirements for voltage stability, an uninterruptible power supply (UPS) can be equipped. In case of sudden voltage interruption or fluctuation, it provides short-term power support for the equipment to ensure its safe shutdown.

Power failure or low voltage Power failure or low voltage is a common power supply problem for laboratory freeze dryers, which can cause the equipment to fail to start or operate normally. The equipment fails to start: When the power supply is cut off or the voltage is too low, the compressor of the laboratory freeze dryer cannot obtain sufficient power support, resulting in the equipment failing to start. Operation interruption: During the operation of the equipment, if the power supply is suddenly interrupted or the voltage is too low, it will cause the equipment to stop running, which may result in the failure of ongoing experiments or even damage to the equipment. Solution: Check the power connection: First, check if the power plug is inserted tightly and if there is electricity in the power socket. At the same time, check whether there is any detachment or loosening at the connection points of the wires and repair them in time. Measure the power supply voltage: Use a multimeter or other tools to measure the power supply voltage and ensure that it is within the allowable range of the equipment. If the voltage is too low, you can contact the power supply department for a solution. Replace the power cord: If the power cord is aged or damaged, a new one should be replaced in time to ensure the stability of the power supply.

Other power-related Issues and preventive Measures In addition to the above-mentioned issues, laboratory freeze dryers may also encounter other power-related problems, such as overheating of power lines and short circuits of electrical components. To prevent the occurrence of these problems, the following measures can be taken: Regularly check the power cord: Regularly inspect the appearance of the power cord for any signs of damage or aging. If any are found, replace it in a timely manner. At the same time, avoid the power cord being subjected to external forces such as squeezing and pulling. Ensure good ventilation around the equipment: Make sure the environment around the laboratory freeze dryer is well-ventilated to prevent the power cord from overheating due to poor heat dissipation. Regular maintenance of electrical components: Regularly inspect and maintain the electrical components of the laboratory freeze dryer, such as cleaning dust and tightening terminal blocks, to ensure their normal operation.

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