Airkey Pass Boxes – Critical Contamination Control Points in Cleanroom Design
Airkey delivers 70+ customised pass boxes to Kenya and Paraguay, expanding global cleanroom footprint
Airkey, a leading Chinese manufacturer specialising in precision cleanroom equipment, has successfully completed the production and shipment of more than 70 customised pass boxes to clients in Kenya and Paraguay. This achievement highlights the company’s growing international presence and its ability to provide engineered contamination control solutions to emerging pharmaceutical, biotechnology, and electronics markets.
Supporting critical cleanroom operations worldwide
Pass boxes—also known as pass-through chambers—play a vital role in controlled environments. They allow safe material transfer between rooms while preserving pressure differentials and preventing cross-contamination.
The recent shipment included both static pass boxes and dynamic pass boxes, each configured according to the specific cleanliness classification and workflow requirements of the receiving facilities.
Static pass boxes: Reliable and economical
Static pass boxes are typically used for transfers between cleanrooms of the same cleanliness grade, such as ISO 7 to ISO 7 environments.
Key characteristics include:
- Sealed transfer chamber design
- Mechanical or electronic interlocking system
- Prevention of simultaneous door opening
- Low energy consumption
- Simple, stable structure
These units provide a cost-effective solution for routine material movement while maintaining cleanroom integrity.
Dynamic pass boxes: Active air purification for critical zones
Dynamic pass boxes are essential when materials move from a lower-classification area into a higher-classification cleanroom, for example, from ISO 8 to ISO 5.
Unlike static models, dynamic pass boxes are equipped with:
- Integrated HEPA or ULPA filtration
- Laminar airflow systems
- Continuous air purification inside the chamber
This active airflow system ensures that materials are exposed to certified clean air before entering critical production zones.
Built-in safety and cleanability features
All Airkey pass boxes are designed with advanced safety mechanisms to protect cleanroom pressure balance and prevent airborne contamination.
Core features include:
- Mechanical or electronic interlocks (fail-safe operation)
- Radiused internal corners to eliminate particle accumulation
- Seamless inner chamber construction for easy cleaning and disinfection
The rounded internal edges remove sharp 90-degree corners where dust and microbes could collect, aligning with GMP hygiene requirements.
Engineered-to-order customisation
Airkey focuses on tailored manufacturing, recognising that every cleanroom layout is unique.
Customisation options include:
- Custom sizing to match spatial limitations or oversized material handling
- Three-door configurations for complex multi-room workflows
- Floor-mounted designs to enable trolley and cart transfer
- Material selection: 304L/316L stainless steel, powder-coated steel, or industry-specific finishes
- Integration features such as UV-C sterilisation lamps and VHP ports
This flexible engineering approach allows clients to integrate pass boxes seamlessly into new or existing cleanroom facilities.
Compliance with international standards
Airkey pass boxes are designed and tested in accordance with major global standards, including:
- ISO 14644-1 cleanroom classification
- GMP guidelines for pharmaceutical production
- IEST-RP-CC002 recommendations
- CE certification and regional electrical compliance standards
This ensures suitability for regulated industries worldwide.
Multi-industry applications
Airkey pass-through systems are widely applied in:
- Pharmaceutical manufacturing – transfer into Grade A/B/C environments
- Medical device production – component movement between assembly and packaging areas
- Semiconductor and electronics manufacturing – protection of sensitive PCBs and wafers
- Food and nutraceutical production – hygienic material transfer in controlled processing areas.
With increasing demand for modular and scalable cleanroom solutions in developing markets, Airkey continues to strengthen its global supply capabilities through advanced manufacturing, quality validation, and project-oriented engineering support.
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