A Dynamic Pass Box is a cleanroom equipment designed to facilitate the safe transfer of materials between controlled environments while minimizing the risk of cross-contamination. Unlike a Static Pass Box, a Dynamic Pass Box is equipped with a HEPA filtration system and motorized airflow that continuously removes airborne particles from the chamber during the transfer process. This makes it an ideal solution for pharmaceutical manufacturing, biotechnology laboratories, hospitals, medical device production, food processing facilities, and other industries where contamination control is critical.
Application:-| Housing Material | Stainless Steel (3/4/316) / Powder Coated |
| External Dimensions | 600x600x300mm, 900x600x300mm, 1200x600x300mm (Customizable) |
| Filtration System | HEPA (99.99% @ 0.3μm) |
| Airflow Capacity | 300-1500 CFM (Model dependent) |
| Air Velocity | 0.45 ± 0.05 m/s |
| Noise Level | ≤ 65 dB |
| Fan Type | Centrifugal / BC Fan |
| Power Supply | 220-240V / 50-60Hz (Customizable) |
What is a Dynamic Pass Box?
A Dynamic Pass Box is an enclosed material transfer chamber installed between two cleanroom areas with different cleanliness classifications. It enables the movement of materials, equipment, and production components without allowing direct airflow between adjoining rooms.
The system operates using HEPA-filtered air that continuously circulates within the chamber, removing airborne contaminants generated during material transfer. Interlocking doors ensure that only one door can be opened at a time, preventing contamination from passing between controlled environments. This controlled transfer process supports regulatory compliance and helps maintain the required level of cleanliness in critical manufacturing and laboratory areas.
Our Dynamic Pass Boxes are designed to deliver dependable contamination control and long-term performance. Manufactured with robust stainless steel construction, they offer excellent durability and corrosion resistance while being easy to clean and maintain. Each unit is equipped with a high-efficiency HEPA filtration system, a powerful blower assembly, strategically designed airflow, door interlocking mechanisms, viewing windows, and user-friendly controls. Optional features such as UV germicidal lamps, differential pressure gauges, and customized dimensions can also be incorporated to meet specific application requirements.
Dynamic Pass Boxes are widely used in pharmaceutical manufacturing plants for transferring raw materials, packaging components, samples, and finished products between classified production areas. They are equally suitable for biotechnology laboratories, hospitals, research facilities, medical device manufacturing units, food and beverage processing plants, chemical industries, and electronics manufacturing environments where maintaining contamination-controlled conditions is essential. By ensuring safe material transfer, Dynamic Pass Boxes help improve operational efficiency while protecting sensitive manufacturing processes.
A Dynamic Pass Box significantly reduces the possibility of airborne contamination during material transfer by continuously supplying HEPA-filtered air within the chamber. It helps maintain cleanroom integrity, minimizes cross-contamination risks, and reduces unnecessary personnel movement between controlled areas. The system also supports compliance with cleanroom standards, improves product quality, enhances workplace hygiene, and contributes to more efficient manufacturing operations. With reliable airflow management and durable construction, it offers a practical solution for industries requiring strict contamination control.
The material to be transferred is placed inside the Dynamic Pass Box through one access door while the opposite door remains locked. Once the door is closed, the blower system circulates HEPA-filtered air throughout the chamber, removing dust and airborne particles from the material surfaces. During the cleaning cycle, the interlocking mechanism prevents both doors from opening simultaneously, eliminating direct air exchange between adjoining rooms. After the programmed cycle is completed, the receiving-side door unlocks, allowing the cleaned material to be safely transferred into the controlled environment without compromising cleanroom conditions.
Comech Industries is committed to delivering high-quality cleanroom equipment that meets the demanding requirements of contamination-controlled industries. Our Dynamic Pass Boxes are manufactured with precision engineering, premium-grade materials, and advanced air filtration technology to ensure dependable performance and long service life. We understand that every facility has unique operational requirements, which is why we offer customized solutions tailored to chamber dimensions, airflow capacity, construction materials, and installation specifications. Supported by technical expertise and a customer-focused approach, we provide cleanroom solutions that help organizations maintain operational efficiency and product quality.
What is a Dynamic Pass Box?
A Dynamic Pass Box is a HEPA-filtered material transfer chamber used to safely move materials between cleanroom areas while reducing the risk of contamination.
How does a Dynamic Pass Box work?
The system uses HEPA-filtered airflow to remove airborne particles inside the chamber while an interlocking door mechanism prevents direct air exchange between adjacent controlled areas.
What is the difference between a Dynamic Pass Box and a Static Pass Box?
A Dynamic Pass Box includes a blower and HEPA filtration system for active contamination control, whereas a Static Pass Box relies solely on enclosed material transfer without powered air filtration.
Where are Dynamic Pass Boxes commonly used?
They are widely used in pharmaceutical manufacturing, biotechnology laboratories, hospitals, medical device production, food processing facilities, electronics manufacturing, and research laboratories.
Can a Dynamic Pass Box be customized?
Yes. Dynamic Pass Boxes can be customized based on chamber size, airflow capacity, material of construction, door configuration, and other application-specific requirements.
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