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The working principle and structural characteristics of the aseptic clean bench
The working principle and structural characteristics of the aseptic clean benchAseptic clean bench is a kind of equipment commonly used in biological experiments, pharmaceutical manufacturing, and other fields to provide a sterile and clean working environment. It can effectively isolate the outside air and microbial contamination, to protect the purity and quality of experimental samples or products.Principle of aseptic clean bench: 1. High-efficiency filter: Equipped with high-efficiency filters inside, usually using high-efficiency filters (HEPA) or ultra-high-efficiency filters (ULPA). These filters can effectively filter out bacteria, viruses, particles, and other harmful substances in the air, so that the quality of air in the work area is improved. 2. Vertical airflow: Vertical airflow design is adopted, i.e. the purified air is blown vertically from the top downwards. This airflow direction prevents outside air and microorganisms from entering the working area and ensures the sterility of the working area. 3. Negative pressure control: Maintain a certain negative pressure environment inside the workbench to ensure that the air does not escape from the work area. Negative pressure control can also effectively prevent the contaminants in the experimental samples or products from spreading into the environment, to protect the health and safety of staff. Structure: 1. Main structure: The main structure of the workbench usually consists of the shell, working area, electronic control system, and other components. The shell is made of metal with good sealing and corrosion resistance. The working area is the space for experiment or operation, equipped with high-efficiency filters fans, and other equipment. 2. Filtration system: The filtration system is the core component, including pre-filter, HEPA or ULPA filter, and fan. The pre-filter can filter out large particles in the air and protect the normal operation of the subsequent filter, while the HEPA or ULPA filter can filter out particles and microorganisms above 0.3 microns, effectively improving the cleanliness of the working area. 3. Control system: The workbench is equipped with an electric control system for controlling the operation status of the filters and fans. Through the control panel, the operator can set parameters such as wind speed and timer switch to meet the needs of different experiments and operations. Applications and advantages of aseptic clean bench in experiments and manufacturing: 1. Biological experiments: It is widely used in biological experiments, such as cell culture, microbiological experiments, genetic engineering operations, and so on. It can provide a sterile environment to protect the purity and reliability of experimental samples and reduce the risk of cross-contamination. 2. Pharmaceutical Manufacturing: It plays a key role in the process of drug manufacturing. It can be used in the preparation of injections, drug formulation, etc. to ensure the cleanliness and safety of the product. 3. Microelectronics manufacturing: In the field of microelectronics manufacturing, it can be used in chip manufacturing, semiconductor packaging, and other steps. It can protect the devices from dust and microbial contamination and improve the quality and reliability of products. 4. Healthcare: In the healthcare industry, it is widely used in operating theatres, laboratories, pharmacies, and other environments. It can provide clean operation space, avoid the occurrence of cross-infection, and protect the safety of medical staff and patients. 5. It has the following advantages: Provide a sterile and clean working environment to protect the purity and quality of samples or products; Prevents contamination from outside air and microorganisms, reducing the risk of cross-infection; Effectively prevent contaminants from spreading into the environment through filtration systems and negative pressure control; It can be flexibly adjusted according to experimental and operational needs to improve work efficiency; With good sealing and corrosion resistance, long service life. |
