An air shower is a contamination control system installed at cleanroom entry points. It uses high-speed filtered air jets to remove dust and particles from surfaces before entry into controlled environments. It acts as a critical barrier between non-clean and clean zones.What is an Air Shower?
Humans and materials carry particles into cleanrooms Even microscopic contamination can affect product quality Pharmaceutical and semiconductor processes require ultra-clean environments They help prevent: Product contamination Batch failure Regulatory non-compliance Cleanroom classification failure Removing particulate contamination from personnel Decontaminating materials before cleanroom entry Supporting gowning procedures Reducing cross-contamination between zones Maintaining controlled environment cleanliness Protecting sensitive manufacturing processes
Air showers are essential because:What are Air Showers Used For?
Air showers are used for:
Personnel Air Showers → For operators entering cleanrooms
Material Air Showers → For equipment and product transfer
Tunnel Air Showers → High-traffic multi-person systems
Pass-through Air Showers → For controlled material movement
Personnel or materials enter the chamber
Doors interlock to prevent contamination leakage
HEPA/ULPA filtered air jets activate
High-velocity air dislodges surface particles
Contaminants are captured by filtration system
Cleaned subject exits into controlled environment
High-velocity air jets (20–30 m/s)
HEPA / ULPA filtration systems
Automated interlocking doors
Stainless steel cleanroom-grade construction
Adjustable cycle timing (10–30 seconds)
Low particle re-circulation design
Pharmaceutical cleanrooms
Semiconductor manufacturing units
Biotechnology laboratories
Hospital sterile environments
Food processing facilities
Research and testing laboratories
Use an air shower when:
Cleanroom contamination risk must be minimized
Personnel or materials enter controlled environments
ISO 14644 classification must be maintained
GMP compliance is required
High cleanliness standards are mandatory
ISO 14644 → Defines cleanroom air quality and particle limits
GMP → Ensures controlled manufacturing environment safety and consistency
What does an air shower do?
It removes dust and particles from personnel or materials before entering a cleanroom.
How does an air shower work?
→It uses high-velocity HEPA-filtered air to dislodge and capture particles.
Are air showers necessary in cleanrooms?
Yes, they are widely used to maintain contamination control at entry points.
What is the air velocity in an air shower?
Typically 20–30 m/s.
What filtration is used?
HEPA or ULPA filters.
Can air showers remove microbes?
They mainly remove particles but may reduce microbial load indirectly.
Air showers are cleanroom entry systems that use high-velocity HEPA or ULPA filtered air to remove particulate contamination from personnel and materials before entering controlled environments. They play a critical role in contamination control, supporting ISO 14644 and GMP compliance across pharmaceutical, semiconductor, and healthcare industries.
