In fields with strict requirements for environmental cleanliness, such as microbiological experiments, biopharmaceutical production, electronic component manufacturing, and food processing, clean benches serve as a solid “protective shield”. With advanced technical principles and precise control capabilities, they provide safe, efficient, and stable clean Spaces for various critical operations. It becomes the core equipment for ensuring the accuracy of experimental results and the reliability of product quality.
I. Core Function: Build a sterile and dust-free operation, “Pure Land”
The core mission of the clean bench is to thoroughly remove particles, microorganisms, and other contaminants from the operating area through scientific airflow organization and an air filtration system, achieving high cleanliness control of the local environment. Its working principle is centered around two key links: “air purification” and “air flow stabilization”.
High-efficiency air filtration system: The equipment is equipped with an internal primary filter and a high-efficiency air filter (HEPA). The primary filter first intercepts large particles of dust, hair, and other impurities in the air, thereby extending the service life of the high-efficiency filter. HEPA filters can efficiently filter particles with a diameter of 0.3μm or more, achieving a filtration efficiency of over 99.97%. Even ultra-high-efficiency air filters (ULPA) can be configured as required to further enhance the filtration accuracy to the 0.1μm level. Ensure that the air entering the operation area meets the Class 100 clean standard (the number of particles ≥0.5μm in each cubic foot of air is ≤100).
Stable airflow organization: According to the different directions of the airflow, clean benches can be divided into two types: vertical laminar flow and horizontal laminar flow. Laminar flow means air that moves in parallel layers with minimal mixing, helping prevent cross-contamination. The clean air flow of the vertical laminar flow workbench covers the operation area vertically downward from the top, effectively avoiding cross-contamination of the operation area caused by the breathing and movements of the operators. The clean air flow of the horizontal laminar flow workbench flows horizontally from the front to the rear, making it suitable for scenarios where there is no direct contamination risk to the operator (such as electronic component assembly). Both air flow patterns can form a stable “clean air flow barrier” (a directed layer of filtered air that prevents external contaminants from entering), preventing external contaminated air from entering the operation area, while quickly removing pollutants generated during the operation process and maintaining the continuous stability of the cleanliness in the area.
Ii. Safety Advantages: Multiple Protections Build a Solid “Safety Defense Line”
Safety is the core design consideration of the clean bench, especially in scenarios involving harmful microorganisms or toxic substances, such as biological experiments and pharmaceuticals. The equipment, through multiple protection mechanisms, not only ensures that the operated samples are not contaminated but also protects the safety of the operators and the external environment
Negative pressure isolation design: Some biosafety-type clean benches adopt a negative pressure chamber structure, creating a pressure difference between the operation area and the external environment. Even if there is a minor leakage in the equipment, the contaminated air will only flow into the negative pressure chamber and will not spread into the laboratory interior, effectively preventing the escape of pathogenic microorganisms.
Ultraviolet disinfection function: The workbench is equipped with ultraviolet (UV) disinfection lamps inside. UV light inactivates microorganisms by disrupting their DNA. During non-operation periods, it can conduct all-round disinfection of the operation area, destroy the DNA structure of microorganisms, kill harmful microorganisms such as bacteria, viruses, and fungi, avoid cross-contamination, and ensure a sterile environment for experiments or production processes.
Wind speed monitoring and alarm system: The equipment is equipped with an internal wind speed sensor to monitor the wind speed of the clean air flow in real time. If the wind speed is lower or higher than the set standard (usually 0.3-0.5m/s), the system will immediately issue an audible and visual alarm to remind the operator to check the filter status or adjust the equipment parameters in time, ensuring that the cleaning effect always meets the standards and avoiding the risk of contamination caused by abnormal air flow.
After considering their safety benefits, it is clear that clean benches also offer significant advantages in efficiency. Explore how these features serve as a “Productivity Assistant” adapted to multiple scenarios.
The purification workbench not only performs excellently in terms of cleanliness and safety, but also its efficient design can significantly enhance experimental or production efficiency, meeting the diverse needs of different fields.
Flexible operating space. The equipment is designed in various sizes and specifications based on application scenarios, ranging from small desktop workbenches (suitable for handling micro samples in laboratories) to large vertical workbenches (meeting the needs of batch product assembly in industrial production). The height and width of the operation area can be flexibly adjusted. At the same time, it is equipped with adjustable work surfaces and lighting systems, providing operators with a comfortable and convenient operating environment and reducing operational fatigue. Improve work efficiency.
Fast clean start-up: The equipment adopts high-efficiency fans and an optimized air circulation system. Within a short period of time after startup (usually 5-10 minutes), the operation area can reach the set clean standard without long waiting times. It is especially suitable for scenarios with frequent experiments and fast production rhythms, effectively saving time and costs.
Low maintenance and long service life: The primary filter can be disassembled and cleaned regularly, reducing replacement costs. The high-efficiency filter is made of high-quality filter materials, with a service life of up to 1-2 years (depending on the usage frequency and environmental dust concentration). Moreover, the equipment body is made of stainless steel, which is corrosion-resistant and easy to clean, reducing daily maintenance workload and lowering equipment operating costs, providing users with long-term and stable cleanliness guarantees.
Iv. Application Fields: “Clean Guarantors” covering multiple industries
With its features of safety, efficiency, and stability, the clean bench has been widely applied in many fields that have strict requirements for cleanliness:
In the field of biomedicine, it provides a sterile environment for sample processing, inoculation, culture, and other operations, ensuring the accuracy and reliability of experimental results, while preventing the harm of pathogenic microorganisms to operators.
In the field of electronic manufacturing, during the production and inspection processes of semiconductor chips, integrated circuits, and precision electronic components, it is necessary to prevent dust and static electricity from polluting or damaging the components to ensure the stable performance and service life of electronic components.
In the field of food processing, it is used in food microbiological detection, aseptic food production (such as pre-treatment before filling yogurt and aseptic beverages), etc., to prevent food from being contaminated by microorganisms, ensure food safety, and meet the hygiene standards of the food industry.
In the field of cosmetics and fine chemicals, During the blending of cosmetic raw materials and the production of skin care products, it is necessary to prevent dust and bacteria from contaminating the products, ensure the quality and safety of cosmetics, and meet the industry’s high requirements for product purity.
As the core equipment of a clean environment, the purification workbench, with its scientific design and reliable performance, provides a solid clean guarantee for experimental research and production manufacturing in various industries. Whether it is to ensure the accuracy of experimental data or to enhance the stability of product quality, it plays an indispensable role and becomes an “invisible guardian” promoting high-quality development in various fields.
