Contamination control is a cornerstone of cleanroom operations. Whether it’s pharmaceuticals, microelectronics, or medical device manufacturing, preventing airborne particles from entering controlled zones is a serious requirement. A Pass Box plays a vital role in this system by enabling safe and efficient material transfer between clean and less-clean areas without direct human movement.
Designed to reduce particle transfer, it is a stainless-steel chamber installed in partition walls. It supports cleanroom protocols by eliminating unnecessary personnel entry. We offer both Static Pass Box And Dynamic variants, each crafted to serve specific cleanroom needs with a focus on hygiene, performance, and reliability.
The Purpose Behind Every Pass Box
The core function of a pass box is simple: to ensure contamination-free movement of items between adjoining cleanroom spaces. Every pass box has an interlocking system that ensures that one door will not open until the other is properly closed; this keeps the airflow of the cleanroom safe.
While a static ideal for non-critical transfers, a static and dynamic pass box is designed for environments with stricter air quality requirements. Both types help maintain sterility, prevent cross-contamination, and preserve cleanroom integrity.
Understanding the Two Types: Static And Dynamic
Static Pass Box
The static pass box is designed for transfer between rooms of similar cleanliness grades. It has no airflow or filtration system and works on the principle of door interlocking to isolate the environments.
Features:
- Mechanical or electronic interlock system
- Seamless stainless-steel body for easy cleaning
- Optional UV light for surface disinfection
- Suitable for transferring documents, sealed tools, or sterile components
This model is commonly used in labs, diagnostic centers, and facilities with minimal air quality variation between zones.
Dynamic Pass Box
The unit is an advanced system that includes HEPA-filtered airflow. It ensures unidirectional clean air across the chamber and is used when materials must move between spaces with differing cleanliness levels.
Features:
- Built-in fan and HEPA/ULPA filtration
- Differential pressure display
- UV sterilization options
- Ideal for pharma manufacturing, vaccine development, and clean assembly lines
These create a small, cleanroom-like environment, perfect for places where microbial or particle control is very important.
Why Every Cleanroom Needs a Pass Box
1. Prevents Direct Personnel Movement
By avoiding unnecessary entry of staff between rooms, a significantly cuts down the risk of contamination. This also reduces the use of gowning supplies and cleaning cycles.
2. Ensures Smooth Workflow
Where material is transferred frequently, a placed in a good place is very helpful. Staff can continue their work while the material is transferred safely.
3. Enhances Regulatory Compliance
Facilities that must meet ISO 14644 or GMP standards are often required to use pass boxes. Our static and dynamic systems are built to satisfy these stringent criteria.
4. Saves Long-Term Costs
It’s reduce the need for additional access points, doorways, and gowning zones. This cuts costs related to HVAC load, floor space, and labor efficiency.
Selecting the Right Pass Box for Your Facility
Choosing between a static pass box and a static and dynamic pass box depends on your cleanroom classification, material sensitivity, and regulatory framework.
The static pass box is ideal for:
- Transfers between equally rated rooms
- Low-frequency transfers
- Facilities with limited airflow differential
Dynamic Pass Box is ideal for:
- High-risk environments
- Transfer between rooms with varying grades
- Pharmaceutical, biotech, and sterile manufacturing sectors
We customize each unit based on the specific airflow, size, and material requirements of your workspace.
Installation & Maintenance Made Easy
Correct installation and routine maintenance are essential to ensure consistent performance. We offer support with:
- On-site integration within partition walls
- HEPA filter testing and replacement
- Door interlock verification
- UV light and sensor calibration
All our pass boxes are built using corrosion-resistant materials, precision-fitted panels, and electronic components that are easy to monitor and service.
Why the Right Pass Box is a Cleanroom Essential
A pass box is much more than a transfer hatch—it’s a key part of any cleanroom’s contamination control strategy. From the simplicity of a Static Pass Box to the advanced filtration in static and dynamic pass boxes, these units help protect product integrity, worker safety, and regulatory compliance.
With our expertise in cleanroom technology, you can be confident in receiving robust, tailored solutions that stand the test of time. Whether you’re designing a new cleanroom or upgrading your contamination control process, investing in the right pass box system is a decision that pays off every day.
Ready to strengthen your cleanroom with the right pass box? Contact Alfa Medico Products today for expert consultation and custom-built solutions that ensure long-term cleanroom reliability.