Cleanroom Equipment

Aluminum Pass Box

The Cleanroom Aluminum Pass Box is a material transfer device installed between clean and non-clean areas, or between zones of different cleanliness levels.

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1. Product Structure

The Aluminum Pass Box consists of the following main components:

Optional Configurations:

• UV Sterilization Lamp-
  

• HEPA/ULPA High-Efficiency Filters

• Buzzer/Intercom System

• Differential Pressure Gauge

• Electromagnetic Lock Electronic Interlock

• PAO Test Port

2. Product Features

1. Material Advantage

• Lightweight yet strong aluminum alloy for easy installation and relocation

• Anodized surface for enhanced wear and corrosion resistance

• Aesthetic appearance suitable for cleanroom environments-
  

2. Interlock Protection

• Mechanical or electronic interlock ensures both doors cannot be opened simultaneously

• Effectively prevents cross airflow contamination and maintains cleanroom pressure differential-
  
  
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3. High Sealing Performance

• Precision manufacturing ensures tight sealing between body and doors

• Sealing gaskets minimize air leakage-
  

4. Operational Convenience

• User-friendly design for simple operation

• Supports left/right door opening adjustment-
  

• Optional non-powered rollers for easy transfer of large items-
  

5. Customizability

• Dimensions can be customized to customer requirements

• Functional modules can be combined as needed

4. Technical Specifications (Standard Model)

5. Product Classification

6. Working Principle

The working principle of the Aluminum Pass Box can be summarized as High Sealing + Interlocking + Physical Isolation:

Operation Process:

1. Operator on the low-cleanliness side opens the outer door

2. Places materials inside the chamber

3. Closes the outer door (interlock activates)

4. Operator on the high-cleanliness side opens the inner door

5. Removes materials and closes the inner door, completing transfer

Interlock Principle:

• When one door is opened, the opposite door is automatically locked

• Ensures air from both zones does not directly communicate

• Prevents pressure differential disruption and contaminant entry

Purification Principle (Optional):

• HEPA filter circulates and filters internal air

• UV lamp irradiates material surfaces for disinfection

• Ensures cleanliness of both materials and environment during transfer

7. Application Areas

Aluminum Pass Boxes are widely used in the following industries:

1. Pharmaceutical and Drug Manufacturing-

• Transfer of raw materials, excipients, semi-finished products between different cleanroom grades

• Complies with GMP standards

• Supports high-frequency material turnover

2. Biological Laboratories

• Transfer of biological reagents, cell cultures, microbial specimens

• UV sterilization function ensures experimental safety

• Suitable for BSL-2 and above laboratories

3. Electronics and Semiconductor Manufacturing

• Clean transfer of chips, circuit boards, precision components

• Reduces dust and static interference on components

• Improves product yield and production stability

4. Food Processing Industry

• Transfer of packaging materials, seasonings, semi-finished products

• Prevents pests, dust, and microorganisms from entering production areas

• Complies with HACCP food safety standards

5. Medical Facilities

• Sterile transfer of medical devices and surgical instruments

• Complies with ISO cleanroom standards

• Suitable for operating rooms, sterile supply departments

8. Selection Guide

When selecting an Aluminum Pass Box, consider the following factors:

9. Installation & Maintenance

Installation:

• Cut corresponding opening in the wall

• Use aluminum profile/galvanized sheet/stainless steel for edge trimming

• Ensure level installation with proper sealing

Daily Maintenance:

• Clean internal and external surfaces daily

• Regularly inspect sealing gasket integrity

• Test interlock functionality periodically

• For HEPA filter units, perform regular integrity testing

10. Conclusion

The Cleanroom Aluminum Pass Box is an essential material transfer device in controlled environments. Its combination of lightweight aluminum construction, reliable interlock protection, and customizable features makes it an ideal choice for pharmaceutical, laboratory, electronics, and food industry applications. Proper selection, installation, and maintenance ensure long-term reliable operation and contamination control.