ISO-Certified Laminar Flow Pass Box | HEPA H14 & 304 Steel | Pharma/Electronics Clean Transfer
The Laminar Flow Pass-Through Cabinet is designed for contamination-free material transfer between cleanroom environments, ensuring compliance with ISO 14644-1 standards. Ideal for pharmaceuticals, laboratories, and electronics manufacturing, it integrates SUS304 stainless steel construction, double-layer tempered glass windows, and H14 high-efficiency filtration to maintain ISO Class 5 air quality. Equipped with UV sterilization lights, electronic interlocks, and low-noise airflow control, it ensures safe, efficient, and aesthetic material transfer.
Parameter Name | parameter |
Material | SUS304 stainless steel with sandblasted finish |
Internal Design | Rounded internal corners, UV sterilization + illumination lights |
Window Design | Double-layer tempered glass with silk-screened black edges |
Control System | Electronic interlock system, DOP testing port, pressure gauge |
Airflow & Noise | Air velocity: 0.35–0.75 m/s, Noise level: 45–55 dB |
Door System | Clamping-style handles, high-elastic sealing strips |
Fan & Filtration | Low-noise fan, H14 liquid tank filter (99.995% @ 0.3µm) |
Lighting | Integrated UV sterilization + LED illumination |
External Dimensions | W600 × D600 × H1000 (mm) |
Internal Dimensions | W400 × D420 × H400 (mm) |
Certifications | ISO 9001 |




Key Features
1. SUS304 Stainless Steel Construction: Sandblasted finish for durability and cleanroom compatibility.
2. Aesthetic & Functional Design: Double-layer tempered glass with black edges for visibility and style.
3. Safety Compliance: Electronic interlock prevents door opening during operation; DOP testing port for filter integrity checks.
4. High-Efficiency Filtration: H14 liquid tank filter with 99.995% efficiency @ 0.3µm.
5. Low-Noise Operation: Optimized fan and impeller for quiet performance (45–55 dB).
6. Sterilization & Illumination: Integrated UV sterilization and LED lighting for contamination control.
Application Scenarios
Material transfer in pharmaceutical cleanrooms.
Sterile sample handling in biomedical laboratories.
Contamination-sensitive component transfer in electronics manufacturing.



Q1: How does this ISO-certified laminar flow pass box ensure compliance with strict cleanliness standards in pharmaceutical and electronics cleanrooms?
A1: This pass box is designed to meet ISO 14644-1 Class 5 (ISO 5) cleanroom requirements, ensuring particle-free transfer of materials. The HEPA H14 filters achieve ≥99.995% efficiency at capturing particles ≥0.3μm, while the laminar airflow system maintains unidirectional air movement to prevent contamination. The 304 stainless steel construction offers a smooth, non-porous surface that resists particle buildup and is easy to clean, critical for GMP and FDA-compliant environments. Additionally, automatic interlocking doors and UV-C sterilization (optional) further prevent cross-contamination, making it ideal for sterile pharmaceutical manufacturing or sensitive electronics assembly.
Q2: Can the 304 stainless steel construction withstand harsh chemicals or frequent use in pharmaceutical or electronics settings?
A2: Yes. 304 stainless steel is corrosion-resistant and durable, making it suitable for environments where exposure to mild chemicals, moisture, or frequent sanitization is common. Its smooth finish prevents dust and debris from adhering, reducing the risk of contamination. The pass box is designed for heavy use, with robust hinges and seals that maintain airtight integrity over time. For highly corrosive applications, optional upgrades to 316L stainless steel provide enhanced chemical resistance while retaining the same ISO-compliant performance. Regular cleaning and filter maintenance (HEPA filters: 12–18 months) ensure long-term reliability in demanding settings.
Q3: How does the laminar flow design of this pass box improve efficiency and reduce downtime in cleanroom operations?
A3: The laminar flow system creates a uniform, high-velocity airflow (0.3–0.5 m/s) that rapidly cleans materials as they pass through, minimizing dwell time and bottlenecks in production lines. The HEPA H14 filters maintain consistent airflow even at high usage rates, ensuring continuous compliance with cleanliness standards. The pass box’s compact, ergonomic design allows easy integration into existing cleanroom layouts, while its intuitive controls and low noise operation improve user efficiency. By reducing the need for manual cleaning or resterilization of materials, this design streamlines workflows and lowers operational costs in pharmaceutical and electronics manufacturing.