Laminar Flow Pass Box: Operation, Standards and Functions
Created on 07.09
Laminar Flow Pass Box: Operation, Standards and Functions
Professional Material Transfer Solution for Cleanrooms
As a leading manufacturer of cleanroom equipment, we understand the critical role laminar flow pass boxes play in material transfer between different cleanliness zones. This article provides detailed information about laminar flow pass boxes, their operation, functions, and compliance with international standards.
一、Laminar Flow Pass Box Operation Procedures and Standards
The proper operation of a laminar flow pass box is crucial for maintaining cleanroom environments. Standard operating procedures include:
- Pre-use check of UV sterilization status
- Verification of door interlock function
- Surface disinfection of transferred items
- Correct operation sequence: open one side door, place items and close, then retrieve from other side
- Regular cleanliness testing
All operations must comply with GB 50073-2013 "Design Code for Cleanrooms" and other national standards.
二、How to Use a Laminar Flow Pass Box
Proper usage involves several key steps:
- Turn on power and run self-cleaning cycle
- Check pressure differential indicator status
- Disinfect item surfaces with alcohol wipes
- Open outer door, place items and close immediately
- Inner side operator waits for self-cleaning completion before opening inner door
- Perform internal cleaning after use
三、Primary Functions of Laminar Flow Pass Boxes
Laminar flow pass boxes serve three main functions:
- Clean Isolation:
- Material Transfer:
- Airflow Control:
These functions are achieved through HEPA filtration and scientific airflow design.
四、Most Commonly Used Types of Laminar Flow Pass Boxes
The three main types are:
- Standard Type:
- Self-Cleaning Type:
- Sterilization Type:
The standard type is most commonly used in cleanrooms.
五、Working Principle of Laminar Flow Pass Boxes
Laminar flow pass boxes operate on these principles:
- Top-mounted HEPA filters create vertical laminar flow
- Bottom return air ensures unidirectional airflow
- Door interlock system prevents simultaneous opening
- Pressure monitoring maintains correct airflow direction
六、National Standards for Laminar Flow Pass Boxes
In China, laminar flow pass boxes must comply with:
- GB 50073-2013 "Design Code for Cleanrooms"
- GB/T 16292-2010 "Test Method for Airborne Particles in Cleanrooms"
- GB 50591-2010 "Code for Construction and Acceptance of Cleanrooms"
- ISO 14644 Cleanroom Standards
FAQs About Laminar Flow Pass Boxes
- What's the difference between laminar flow pass box and normal pass box?
- How often should HEPA filters be replaced in pass boxes?
- How to verify the effectiveness of UV sterilization?
- What are the maintenance requirements for pass boxes?
- How to check if airflow pattern is normal?
- Can pass boxes be used in biosafety laboratories?
- What's the noise standard for pass boxes?
- What pressure differential should be maintained?
- How to choose the right size of pass box?
- What energy-saving features are available?
As a professional cleanroom equipment manufacturer, we provide high-quality laminar flow pass boxes that meet all international and national standards. Our products are widely used in pharmaceutical, electronics, food industries and more, offering reliable material transfer solutions for cleanrooms.
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