Key Details To Improve Cleaning Efficiency: Pass Box Type Comparison And Application Suggestions

In industries such as chip manufacturing, cosmetics, food processing, and pharmaceutical production, clean rooms are not only basic configurations, but also key guarantees for quality and compliance. In the daily operation of clean rooms, Pass Box, as a "transfer station" for materials to enter and exit clean areas, plays an indispensable role in reducing cross-contamination and keeping the environment clean.

Definition of Pass Box

Pass Box is a device for transferring items between clean rooms or between clean rooms and non-clean areas. Through the combination of physical isolation and air showers, it can effectively reduce the flow of personnel, reduce the risk of contamination caused by differences in air cleanliness levels, and ensure high cleanliness requirements for products and the environment.

Understand different types of pass boxes for more scientific selection

Understanding Pass Box Types helps users to scientifically configure according to the actual cleanliness level, material type and frequency, avoiding resource waste and risk hazards caused by over-equipment or insufficient functions of equipment.

According to its functional structure and applicable environment, pass boxes can be divided into many types, mainly including:

• Pass Box Static: No air shower system, suitable for the transfer of items between areas with little difference in cleanliness level, such as between Class C and Class D, suitable for cosmetics or general laboratory environments.

• Dynamic Pass Through Box: Built-in high-efficiency filter (HEPA/ULPA) and fan system, automatic air shower treatment when the items are transferred, effectively removing particulate pollution, suitable for high cleanliness areas, such as chip workshops or drug sterile areas.

Difference between Dynamic Pass Through Box and Pass Box Static

In cleanroom design, customers often face the following question: Should we choose a dynamic or static pass box?

Pass Box Static focuses more on physical isolation function, does not have a built-in air shower device, and only relies on the double-door interlocking mechanism to block air flow and maintain a clean indoor environment. It is suitable for delivering items with low contamination risk.

The Dynamic Pass Through Box integrates an air shower and filtration system, flushing the surface of the delivered object with high-speed clean airflow to effectively remove attached dust particles or microorganisms. Its main advantage is that it can actively purify during the delivery process, which is particularly suitable for scenes with strict particle control such as pharmaceutical preparations and electronic optics.

Data comparison between static and dynamic pass through boxes

Case sharing

Take a biopharmaceutical project we have served as an example. Its GMP sterile workshop is set as a Class A/B clean environment. Finally, the Dynamic Pass Through Box was selected, equipped with a double-layer HEPA filtration system and ultraviolet sterilization module to achieve automatic purification before and after each pass. Compared with the static solution, although the cost is slightly higher, it has greatly improved compliance and safety factors, and the subsequent verification was extremely smooth.

Summary

In cleanroom projects, although the Pass Box is a small device, its impact on the overall clean system is crucial. Therefore, reasonable selection of Pass Box Types, clear dynamic and static application boundaries, and customized design solutions provided by professional suppliers can truly protect the clean environment.

Amber has more than 17 years of industry experience, supports personalized customization, provides drawing design and door-to-door installation services. Welcome to consult us for professional advice on your industry and workshop layout.