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Freeze dryer does not damage the experimental sample
Shanghai Xinzhuang Instrument Co., Ltd. is a company that combines R&D, manufacturing, and sales, driven by a business philosophy centered on scientific innovation and technological advancement. The company continuously invests in strategic, product, and technological innovations, contributing to the progress of human society. With a commitment to excellence in both product quality and customer service, Shanghai Xinzhuang specializes in producing a wide range of laboratory equipment, ensuring reliability and performance for its clients.
Freeze-drying, also known as lyophilization, is a process where a water-containing substance is first frozen into a solid state, then the moisture is removed through sublimation—directly converting ice into vapor without passing through the liquid phase. In compressed air drying systems, freeze-drying involves lowering the temperature of the compressed air to cause moisture to condense and be removed. This method operates on a principle similar to refrigeration, where compressed air passes through a cold pipe, reducing its temperature to meet the required drying standards.
In China, freeze-drying technology has seen some development, especially in the pharmaceutical industry, where it is widely used for injectable drugs. This process enhances drug stability, extends shelf life, and benefits both patients and medical professionals. However, there are limited types of freeze-dried medicines, with high costs and relatively less advanced processes. Traditional Chinese medicine (TCM) also utilizes freeze-drying for small quantities of herbs such as ginseng, antler, yam, and Cordyceps. Yet, many traditional formulations remain unprocessed using this technique, highlighting a gap compared to international standards.
Japan has made notable progress in integrating Western and TCM practices, improving the tanning methods of herbal medicines and enabling them to be produced as injections or tablets. This innovation addresses challenges in treating acute conditions with traditional remedies and opens up new research opportunities.
In biotechnology, freeze-drying is crucial for preserving biological products like sera, vaccines, enzymes, antibiotics, and hormones. It's also used in blood and tissue storage, making it essential in medical and scientific fields. The development of freeze-drying equipment is closely tied to the evolution of these technologies. Currently, freeze-drying systems are mainly categorized into batch and continuous types, ranging from small-scale to large industrial setups.
Batch freeze-drying equipment is ideal for multi-variety, small-batch production, particularly in food processing. It allows for independent operation, easy maintenance, and precise control over temperature and vacuum conditions. However, it suffers from low efficiency due to time-consuming loading and unloading processes. On the other hand, continuous freeze-drying systems are more efficient for large-scale production of pastes and granules, offering automation and reduced manual intervention, though at a higher cost.
With the completion of GMP certification, domestic freeze-drying equipment has entered a modern era, featuring reliable performance, advanced functions, and compatibility with online cleaning and sterilization. While foreign equipment offers more specifications and energy-efficient designs, domestic alternatives are rapidly catching up.
To ensure product quality and energy efficiency, hybrid systems combining freeze-drying with other drying techniques, such as spray freeze-drying, are increasingly being adopted. Looking ahead, the industry aims to improve drying efficiency, reduce time, and save energy while maintaining product integrity.
At Shanghai Xinzhuang Instrument Co., Ltd., we believe in quality as the foundation of survival, technology as the driver of growth, management as the key to efficiency, and service as the basis of trust. Every project, every step, and every piece of equipment is handled with precision and care. Our professional team is here to support you. We welcome your inquiries and look forward to serving you.
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[Image: Freeze dryer does not damage the experimental sample]