What is cleanroom?

A cleanroom refers to a contamination-controlled environment featuring an ultra-low concentration of airborne particulates, engineered specifically for precision manufacturing processes and high-precision scientific research. A cleanroom project encompasses the systematic design, professional construction and rigorous performance validation of such a facility, all conducted to comply with stringent contamination control specifications and standards.A complete cleanroom is much more than just a "clean room." It is an integrated controlled environment system, comprising the following core elements:

1. Physical Envelope & Infrastructure

This is the cleanroom's "shell," creating a sealed, cleanable barrier.

• Architectural Structure: Walls, ceilings, and floors, typically made of smooth, non-porous, non-shedding panels (e.g., coated steel, fiberglass-reinforced plastic).

• Surface Finishes: Seamless epoxy or polyurethane flooring, coving (rounded corners), sealed windows and lighting fixtures.

• Controlled Access Points: Airlocks, gowning rooms, and material pass-throughs to regulate the movement of personnel and goods.

2. Core Environmental Control Systems

This is the "heart and lungs" of the cleanroom, essential for maintaining cleanliness.

• Air Filtration & Handling: Utilizes HEPA or ULPA filters to remove ≥99.97% of airborne particles of a specified size.

• Airflow Design: Employs laminar (unidirectional) or turbulent (non-unidirectional) airflow to continually sweep away contaminants.

• Pressure Differential: Maintains positive pressure (to prevent infiltration from less clean areas) or negative pressure (for containment of hazards).

• Climate Control: Precision HVAC systems to regulate temperature and humidity within strict tolerances for both process stability and personnel comfort.

3. Supporting & Monitoring Systems

• Utilities: Cleanroom-compatible electrical systems, lighting, process gases, and ultra-pure water.

• Monitoring Systems: Real-time sensors and data loggers for critical parameters: particle count, differential pressure, temperature, and humidity.

• Contamination Control: Anti-static measures (e.g., conductive flooring, ionizers) and vibration mitigation where necessary.

4. Stringent Operational Protocols

This is the "software"—the human-focused procedures that ensure system effectiveness.

• Gowning Procedures: Strict protocols for wearing full cleanroom attire (coveralls, hoods, gloves, boots, face masks).

• Cleaning & Disinfection: Regular, validated procedures for cleaning all surfaces with appropriate agents.

• Material & Equipment Flow: Defined procedures for cleaning and introducing all items into the cleanroom.

• Personnel Training & Conduct: Comprehensive training on aseptic behaviors (e.g., slow movement, minimizing talk) to mitigate human-borne contamination.