The Guardian of The Clean Room: The Principle And Role of The Clean Bench

In high-tech manufacturing, biomedicine, scientific research and other fields, Clean Room is to ensure product quality and experimental accuracy of the key environment. And the Clean Bench, as one of the core equipments in the Clean Room, has become an indispensable “guardian” in these fields with its unique working principle and significant role.

Working Principle of Clean Bench

Clean Bench, also known as aseptic bench, is a kind of air purification equipment that provides a localized high cleanliness working environment. Its working principle is mainly based on aerodynamics and filtration technology. Specifically, the Clean Bench through the following steps to achieve its purification function:

• Air intake and pre-filtration: Clean Bench is equipped with a high-efficiency fan system, can be indoor air intake and through the pre-filter for initial filtration. The main role of the pre-filter is to remove large particles and dust, in preparation for the subsequent fine filtration.

• High-efficiency air filtration: The pre-filtered air then enters the high-efficiency filter (HEPA), which, with its extremely small pore size (usually less than 0.3 μm) and high filtration efficiency (up to 99.97% or more), is able to effectively block airborne pollutants, such as bacteria, viruses, and particles, and to ensure that the cleanliness of the output air is maintained.

• Clean Air Output: The clean air after HEPA filtration is blown out from the working table surface at a certain speed and uniform wind speed to form a layer of stable clean airflow barrier. This layer of airflow can not only effectively block the entry of external pollutants, but also blow away the tiny particles on the worktable surface to keep the work area continuously clean.

The Role of Clean Bench

Ultra-clean workbench plays a vital role in the Cleanrooms, mainly reflected in the following aspects:

• Provide a clean working environment: Clean Bench provides a localized high cleanliness working environment for operators through its efficient air purification function. This is crucial for occasions that require strict control of environmental pollution, such as semiconductor manufacturing, biomedical research and development, and precision instrument assembly.

• Protecting samples and reagents from contamination: In scientific research experiments and production processes, the purity of samples and reagents directly affects the accuracy of experimental results and product quality. By isolating external contamination, the ultra-clean bench ensures that samples and reagents are not contaminated during processing, improving the accuracy of experiments and the qualification rate of products.

• Safeguarding operator health: In biomedical and chemical fields, many operations involve the handling of hazardous substances. By providing a clean working environment, the Clean Bench reduces operator exposure to hazardous substances, thereby reducing occupational health risks.

• Improving productivity and product quality: In Cleanrooms, the use of Clean Benches can significantly improve productivity and product quality. By reducing rework and scrap rates due to contamination, companies are able to reduce production costs and improve market competitiveness.