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Advanced Pass Box Systems for Critical Environments

Created on 01.07

Advanced Pass Box Systems for Critical Environments

Material transfer between controlled environments requires precision engineering. Our advanced pass box solutions ensure contamination-free transfer while maintaining integrity across different cleanliness classifications.

Fundamental Design Principles

Pass boxes serve as critical barrier technology in cleanroom environments, preventing cross-contamination during material transfer. The selection between static and dynamic systems depends on several critical factors including pressure differentials, contamination risks, and operational workflows.

Key Selection Question: Static or Dynamic?

When choosing between static and dynamic pass boxes, consider that static pass boxes are suitable for same-class areas where pressure differentials are minimal, while dynamic pass boxes are recommended for different cleanliness levels or higher contamination control requirements where maintaining unidirectional airflow is essential.
Static Pass Box Systems
Static pass boxes provide a physical barrier without active airflow, making them ideal for transfers between environments with equivalent cleanliness classifications.
Steel door with a square glass window, latch handle, and red safety indicator.
  • Primary Application:
  • Air Management:
  • Door Interlock:
  • Containment Level:
  • Energy Consumption:

Technical Considerations

  • Material: 304 or 316L stainless steel standard
  • Surface finish: Electropolished or powder-coated options
  • Interlock types: Mechanical, magnetic, or electronic
  • Viewing window: Tempered glass with silicone gasket
Dynamic Pass Box Systems
Dynamic pass boxes incorporate HEPA-filtered airflow to maintain pressure differentials and actively remove contaminants during transfer operations.
Stainless steel pass box with control panel and gauge.
  • Primary Application:
  • Air Management:
  • Purge Cycle:
  • Containment Level:
  • Energy Consumption:

Frequently Asked: UV Integration

Yes, UV light can be installed in a pass box as an optional feature for additional sterilization. UV-C lighting (254nm wavelength) can be integrated into both static and dynamic systems to provide microbial reduction on surfaces between transfers.
Technical Parameter
Static Pass Box
Dynamic Pass Box
Airflow Velocity
Not applicable
0.45 m/s ±20% (adjustable)
HEPA Filter Efficiency
Not applicable
99.99% at 0.3μm (EN1822)
Noise Level
<55 dB(A)
<65 dB(A) (with blower)
Power Requirements
110-240V AC, <100W
110-240V AC, 300-800W (depending on size)
Control System
Basic interlock with indicator lights
Advanced PLC with touchscreen, data logging
UV Sterilization Option
Available for both types: 15-30W UV-C lamps with safety interlocks

Advanced Features & Customization

Modern pass box systems incorporate sophisticated features to meet the evolving demands of pharmaceutical, biotechnology, and electronics manufacturing environments.

Complete Customization

Addressing the common question about customization: Absolutely, all cleanroom pass boxes can be customized based on wall thickness, usage, and project requirements. We engineer solutions from 200mm to 1000mm wall thickness compatibility.

Customization Options

Dimensions, materials, door configurations (single/double, sliding/hinged), control panel placement, and integration with facility management systems.

UV Sterilization Systems

Integrated UV-C lighting systems provide microbial reduction between transfers. Our systems include safety interlocks that automatically deactivate UV when doors are opened.

UV Specifications

  • Wavelength: 254nm (germicidal)
  • Lamp life: 9,000 hours typical
  • Safety: Door interlock, timer control
  • Effectiveness: 99.9% microbial reduction on exposed surfaces

Smart Control Systems

Advanced PLC controls with touchscreen interfaces, data logging, and connectivity options for integration into facility monitoring systems and compliance documentation.

Control Features

  • Cycle counting and logging
  • Pressure differential monitoring
  • Filter resistance tracking
  • Remote monitoring capability

Integration Consideration

When integrating pass boxes into existing facilities, consider not just the physical dimensions but also the control system compatibility, validation requirements, and maintenance accessibility. Our engineering team provides comprehensive support from design through installation and validation.

Industry Applications & Best Practices

Different industries have unique requirements for material transfer between controlled environments. Understanding these requirements ensures optimal pass box selection and configuration.
Pharmaceutical Manufacturing
In pharmaceutical applications, pass boxes must comply with cGMP requirements and support validation protocols.
  • Common Configuration:
  • Critical Feature:
  • Material:
  • Validation:
Biotechnology & Research
Research facilities require flexibility and often need to transfer sensitive biological materials between different containment levels.
  • Common Configuration:
  • Critical Feature:
  • Material:
  • Flexibility:

Application-Specific Configuration Guidance

When selecting pass boxes for electronics manufacturing (where ESD protection is critical) versus pharmaceutical applications (where microbial control is paramount), the customization options become particularly important. Our engineering team specializes in configuring pass boxes based on specific wall thickness requirements, which varies significantly between temporary modular cleanrooms and permanent pharmaceutical facilities. The ability to customize based on these practical considerations ensures optimal performance and integration.
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