English

Embedded Pass-Through Windows Maintaining Cleanroom Integrity During Material Transfers

Created on 2025.07.15

I. Introduction

Embedded pass-through windows (PTWs) are critical components in cleanroom facilities, pharmaceutical labs, and microbiological research centers. These flush-mounted transfer systems enable safe material movement between controlled environments while preventing cross-contamination and maintaining ISO-classified air cleanliness standards.
Stainless steel pass box with a glass window and a latch lock.

II. Design Principles

Modern embedded PTWs incorporate:
1. Flush-Mount Construction: Seamless integration with cleanroom walls
2. Interlocking Doors: Prevents simultaneous opening of both sides
3. Gasket Seals: EPDM or silicone gaskets for airtight closure
4. Stainless Steel Surfaces: 304 or 316L grade for corrosion resistance
5. Viewing Windows: Polycarbonate or tempered glass panels

III. Technical Specifications

Standard configurations include:
- Sizes: 300×300mm to 1200×1200mm (custom sizes available)
- Materials: 1.2mm-2.0mm stainless steel thickness
- Pressure Resistance: ±50Pa to ±250Pa options
- Surface Finish: Ra ≤0.8μm electropolished surfaces
- Airflow: Optional HEPA filtration units (ISO Class 4-8)

IV. Operational Features

1. Dual Interlock System: Mechanical/electronic door coordination
2. UV Sterilization: Integrated germicidal lamps (optional)
3. Pressure Equalization: Automatic venting mechanisms
4. Monitoring Ports: For particle counters or environmental sensors
5. Ergonomic Handles: Easy-grip designs for gloved operators

V. Industry Applications

1. Pharmaceutical: API transfer between Grade B/C areas
2. Biotechnology: Cell culture media passage
3. Microelectronics: Wafer transport in semiconductor fabs
4. Healthcare: Sterile supply transfer in hospitals
5. Research: Sample movement in BSL-2/3 labs

VI. Compliance Standards

Embedded PTWs meet:
- ISO 14644-1 Cleanroom Standards
- EU GMP Annex 1 Requirements
- FDA 21 CFR Part 11 (for electronic models)
- IEST-RP-CC002.3 Guidelines
- NSF/ANSI 49 Certification

VII. Installation Considerations

1. Wall Preparation: Structural support requirements
2. Cleanroom Penetration: Maintaining envelope integrity
3. Electrical Integration: For smart models
4. Validation Protocols: IQ/OQ documentation
5. Maintenance Access: Service panel placement
Contact
Leave your information and we will contact you.
WhatsApp