Laminar Flow Pass Box

Snyli Environmental Technology (Shandong) Co., Ltd. is one of the most reliable manufacturers and suppliers of laminar flow pass box in China. With abundant experience, we warmly welcome you to wholesale advanced laminar flow pass box from our factory. For price consultation, contact us.

A Laminar Flow Pass Box is a critical interface device installed between two cleanroom areas of different cleanliness grades, enabling safe material transfer while maintaining a strict environmental barrier. Unlike standard pass-through boxes that merely provide a physical partition, the Laminar Flow Pass Box actively generates unidirectional, particle-free air within its chamber. This laminar airflow, typically at 0.45 m/s, acts like an invisible air shower that sweeps across the workspace, pushing contaminants away and ensuring the internal environment remains at an ISO Class 5 (Class 100) or higher cleanliness level during the entire transfer cycle.

This system relies on a fan-filter unit (FFU) equipped with a high-grade H14 HEPA filter, capable of removing 99.997% of airborne particles down to 0.3 microns. The carefully engineered airflow pattern, usually top-to-bottom, prevents turbulent eddies that could resuspend settled particles, delivering a level of protection that static pass boxes cannot achieve.

Note: According to the customer needs, the order can be a variety of non-standard size and floor-standing transfer window.

As a Dynamic Pass Box, this equipment is engineered to actively control its internal environment rather than passively rely on surrounding conditions. Following are its key features:

• H14 HEPA Filtration Core：The HEPA Filter Pass Box uses a high-grade H14 HEPA filter to remove 99.997% of particles (≥0.3 μm). A built-in differential pressure gauge allows real-time monitoring of filter status, ensuring you know exactly when service is required.
• Electronic Interlock with UV Sterilization：An advanced electronic interlock system physically prevents both doors from being opened simultaneously. The integrated UV sterilization lamp can be programmed to activate after each transfer cycle, effectively neutralizing any microbial contaminants inside the chamber.
• Durable 304 Stainless Steel Construction：As a true Stainless Steel Pass Box, both interior and exterior are fabricated with corrosion-resistant 304 stainless steel. Internal corners are seamlessly radiused to eliminate crevices where dirt could accumulate, providing a smooth, cleanable surface perfectly suited for sanitization protocols.
• PAO/DOP Testing Port：An integrated test port supports on-site PAO (poly-alpha-olefin) or DOP (dioctyl phthalate) aerosol challenge testing. This allows you to easily verify the integrity of the HEPA filter installation as part of your routine validation processes.
• User-Friendly Control Panel：The intuitive control interface allows adjustable purge cycle times and provides visual indicators for door status and filter condition. This simplicity reduces operator training time and minimizes the risk of procedural errors.

The Laminar Flow Pass Box is the preferred choice for material transfer wherever uncompromised aseptic conditions are mandatory. It acts as a clean airlock that safeguards products and processes from particle contamination. Typical applications include:

• Pharmaceutical Manufacturing (Sterile Fill-Finish Lines)：Provides an ISO Class 5 environment for transferring vials, stoppers, and other sterile components into an aseptic processing suite, preventing contaminants from compromising the fill-finish operation.
• Biotechnology & Life Science Laboratories：Safeguards critical experiments by enabling movement of sensitive materials (like cell cultures or samples) between different lab zones without exposure to airborne contaminants.
• Hospital Pharmacies (IV Compounding Areas)：Used to transfer ingredients and supplies into a sterile compounding cleanroom, maintaining the stringent environment required for preparing hazardous or sterile IV drugs.
• Medical Device & Electronics Manufacturing：Ensures components remain particle-free during inter-stage transfers, dramatically reducing defect rates in high-precision assembly processes.

SNYLI is a specialized manufacturer dedicated to the research, design, and production of cleanroom equipment. Our engineering team focuses on delivering robust and compliant solutions for critical environments, grounded in years of industry experience. We operate a modern production facility equipped with advanced fabrication tools and rigorous quality control checkpoints throughout the manufacturing process.

Our Laminar Flow Pass Boxes are manufactured in compliance with ISO 9001 quality management standards and undergo individual performance verification prior to shipment. We provide CE and ISO certifications, and maintain a global supply chain to ensure fast delivery. From order confirmation to after-sales support, our professional team partners with distributors and end-users to ensure each equipment installation performs reliably and consistently over its entire service life.

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