latest company case about Guangzhou Cleanroom Construction Co., Ltd. Certifications

A clean bench—also known as a laminar flow clean bench—is a specialized piece of laboratory equipment designed to provide a particle-free working environment for non-hazardous operations. It delivers a continuous stream of HEPA-filtered air across the work zone, effectively protecting samples, instruments, and processes from contamination. Clean benches are widely used in electronics manufacturing, medical laboratories, pharmaceutical research, precision assembly, and other environments that require high levels of cleanliness.

A clean bench operates using three key components:

1. Air Intake and Pre-Filtration

   Ambient air is first drawn into the unit through a pre-filter, which removes larger dust particles. This protects the HEPA filter and extends its service life.

2. HEPA Filtration

   The filtered air then passes through a High-Efficiency Particulate Air (HEPA) filter, typically rated at H13 or H14, with filtration efficiency up to 99.99% at 0.3 microns.
   This ensures that the airflow entering the work area is ULTRA-clean.

3. Laminar (Unidirectional) Airflow

   The clean air is delivered in a uniform laminar flow, either vertically downward or horizontally outward, depending on the bench design.
   This steady airflow pushes particles away from the workspace, preventing contamination of sensitive samples.

Clean benches are generally classified into two types:

1. Vertical Laminar Flow Clean Bench

   Air flows downward from a top-mounted HEPA filter

   Offers better protection against falling contaminants

   Suitable for microbiology, electronics assembly, and sterile handling

   More comfortable for long operations

2. Horizontal Laminar Flow Clean Bench

   Air flows horizontally from the back toward the operator

   Ensures stable airflow across the work surface

   Often used in precision instrument assembly, semiconductor production, and optical manufacturing

Note: Clean benches protect the product, but do not protect the operator from hazardous aerosols or chemicals. For hazardous materials, a biosafety cabinet should be used instead.

• HEPA/ULPA filtration to maintain ISO Class 5 or Class 100 cleanliness
• Laminar flow airflow design ensuring uniform protection
• Stainless steel work surface for durability and easy cleaning
• Low-noise, energy-efficient fans
• LED lighting for enhanced visibility
• Optional UV sterilization for surface decontamination
• Vibration-resistant structure for precision operations

These features make clean benches highly reliable for environments where contamination control is essential.

• Laboratories (non-hazardous sample handling)
• Pharmaceutical preparation
• Electronics and semiconductor manufacturing
• Optical and precision component assembly
• Microbiology plating and sterile transfers
• Medical device production

They provide a cost-effective solution for maintaining localized clean environments without constructing a full-scale cleanroom.

• Ensures a high level of cleanliness for sensitive operations
• Protects products from airborne contamination
• Easy installation and low maintenance
• More affordable than full cleanroom systems
• Suitable for a wide range of industries and processes

A clean bench is an essential tool for achieving contamination-free working conditions in laboratories and manufacturing environments. By providing a constant stream of HEPA-filtered airflow, clean benches protect sensitive samples and products, ensuring reliability, accuracy, and quality during critical operations. They are a versatile, efficient, and economical solution for maintaining high cleanliness standards in various industries.