Introduction
A Dynamic Pass Box is a cubical, stainless steel enclosure fitted between two classified cleanroom areas. Its primary function is to transfer materials without compromising the cleanliness and integrity of controlled environments. With HEPA/ULPA filtration, electromagnetic interlocks, and a recirculating airflow system, it ensures safe and sterile movement of products.
At ProtechAir, we are a trusted Dynamic Pass Box Manufacturer in Ahmedabad, Gujarat, specializing in cleanroom equipment for pharmaceutical, healthcare, food, biotech, and electronic industries. Our pass boxes are GMP-compliant, energy-efficient, and customizable to meet diverse industry requirements.
What is a Dynamic Pass Box?
A Dynamic Pass Box is equipped with HEPA filtration and an airflow system that prevents cross-contamination between rooms of different cleanliness grades. Unlike a Static Pass Box, it continuously circulates filtered air to maintain sterility during transfer.
- Construction: Stainless Steel SS 304/316
- Air Filtration: HEPA H14 filters (99.97% efficiency) with EU-6 grade pre-filters
- Operation: Electromagnetic door interlock system with UV germicidal light
- Air Flow Velocity: 0.45 ± 0.05 m/s (90 ± 20 FPM) below six inches of grill
Features of ProtechAir Dynamic Pass Box
Standard Features
- Double skin SS cabinet with toughened glass doors
- Electromagnetic interlocking system (ensures one door stays closed while the other is open)
- HEPA filter H14 with EU-6 grade pre-filter
- Centrifugal air blower with variable speed control
- Magnehelic Differential Pressure Gauge
- Recirculated Air Filtration System
- Pre-installed UV Germicidal & White LED Lights
- Feather-touch control panel for blower, light, and pressure display
- Sound level below 65dB
- Power Supply: 220V Single Phase, 50 Hz
Optional Features
- Digital pressure gauge with alarm
- Hour meter for filter performance tracking
- DOP/PAO test ports for filter integrity testing
- Viewing glass panel for easy monitoring
- Advanced airtight sealing system
How a Dynamic Pass Box Works
The working principle of a Dynamic Pass Box is similar to a Laminar Air Flow unit. It ensures that:
- Only filtered, clean air enters the transfer chamber.
- Pollutants are removed by HEPA/ULPA filters.
- Interlocked doors prevent both sides from opening simultaneously.
- UV light sterilization provides an added layer of safety.
- Airflow is recirculated to maintain positive pressure and cleanliness.
This setup minimizes contamination risk and maintains GMP cleanroom standards.
Applications of Dynamic Pass Box
Dynamic Pass Boxes are widely used in industries requiring strict contamination control, including:
- Pharmaceutical industry – For sterile product and raw material transfer
- Medical device & implant manufacturing – For particle-free transfers
- Biotechnology & vaccine manufacturers – For sensitive material handling
- Food processing industry – For hygienic transfers
- Electronic & semiconductor industries – For dust-sensitive components
- Chemical & research laboratories – For safe passage of hazardous materials
- Educational institutions – For laboratory cleanroom operations
Why Choose ProtechAir as Your Dynamic Pass Box Manufacturer in Ahmedabad?
- Local Expertise in Gujarat – Fast delivery, installation, and support
- Customized Solutions – Built as per user requirement specifications (URS)
- GMP & ISO Compliance – Fully certified cleanroom equipment
- Durability & Reliability – Made with high-grade stainless steel
- After-Sales Support – Maintenance, filter replacement, and service documentation
Frequently Asked Questions (FAQs)
Q1. What is the difference between a Static Pass Box and a Dynamic Pass Box?
A static pass box does not have an air circulation system and is used between areas of the same cleanliness level. A dynamic pass box, on the other hand, has a HEPA filtration system with continuous airflow, making it suitable for transferring materials between areas of different cleanliness grades.
Q2. Why is HEPA filtration important in a Dynamic Pass Box?
HEPA filters ensure that only clean, particle-free air circulates inside the pass box. This prevents contamination during material transfer and maintains cleanroom integrity.
Q3. What industries use Dynamic Pass Boxes?
Dynamic pass boxes are widely used in pharmaceutical manufacturing, biotechnology labs, medical device production, food processing, semiconductor industries, and research laboratories.
Q4. Can ProtechAir provide customized Dynamic Pass Boxes?
Yes, ProtechAir manufactures customized Dynamic Pass Boxes tailored to client specifications, including size, airflow, interlocking mechanisms, and optional features like UV light or digital monitoring.
Q5. How often should the filters in a Dynamic Pass Box be replaced?
It depends on usage and environment. Typically, HEPA filters should be tested every 6–12 months and replaced when efficiency drops or pressure differential increases beyond recommended levels.