Pass Box (DPB & SPB)
A dynamic pass box in a cleanroom is an essential component used to facilitate the transfer of materials or objects between areas of differing cleanliness levels while minimizing the risk of contamination. This specialized piece of equipment maintains the integrity of a cleanroom environment by creating a controlled and secure passage for items to enter or exit.
Here's how a dynamic pass box works :-
Dual Doors
A dynamic pass box typically consists of two interlocking doors—one on the cleanroom side and the other on the non-cleanroom side. These doors cannot be opened simultaneously, ensuring that only one side is accessible at any given time.
Airflow Control
The pass box is equipped with HEPA or ULPA filters and a fan system to maintain a unidirectional airflow. This airflow helps prevent the ingress of contaminants from the non-cleanroom side into the cleanroom during material transfer.
UV-C Germicidal Lamps
Many dynamic pass boxes also incorporate UV-C germicidal lamps to disinfect the materials or objects being transferred. This further reduces the risk of microbial contamination.
Interlocking System
To maintain the cleanroom's integrity, the doors of the pass box are interlocked. When one door is open, the other remains locked, ensuring that only one side is accessible at a time.
Dynamic pass boxes are widely used in pharmaceutical manufacturing, biotechnology, and other industries where maintaining strict cleanliness and contamination control is essential. They help streamline material transfer processes while minimizing the risk of introducing particles or microorganisms into the cleanroom environment, ultimately ensuring the quality and integrity of products manufactured within.
Dynamic Pass Box
Specification :-
- Material of construction:-SS 304 / 316 / 316L
- Size:- Available In Standard And Custom Made Sizes
- Doors:- SS doors with double walled flush glass view panels & door closer
- Motor & Blower:- Dynamically balanced motor & blower
- Filters:- Two stage filtration with Miniplate HEPA Filter H14 99.999% Efficiency 0.3 µm & Pre-Filter EU-6 98% Efficiency 5 µm
- Air cleanliness :- ISO Class 5 (ISO 14644-1:1999 (E))
- Air Velocities:- 0.45 m/s or 90 - 100 fpm
- Air Flow Direction :– Vertical - Re-circulatory
- Vibration Level :– Minimum
- Noise Level :- Less than 65 dB
Accessories :-
- Electro-Magnetic Interlocking system for the doors
- Touch controller For Blower / Light / Pressure Display
- Lights and Ultraviolet Fluorescent Light With Hour Meter
Static Pass Box
Specification :-
- Material of construction:-SS 304 / 316 / 316L/PCGI
- Size:- Available In Standard And Custom Made Sizes
- Doors:- Double walled flush glass view panel doors with Electro- Magnetic Interlocking system
Accessories :-
- Tear Drop Light And Germicidal Ultraviolet Fluorescent Light With Hour Meter
- Feather Touch Controller For Door Release Switch on Either Side