Differences and Applications of Laminar Flow Ceiling Systems in Class I, ClassII, and Class III Cleanrooms
2026-08-25
Industry standard: Class 100 (Class I operating room), Class 1,000 (Class II), and Class 10,000 (Class III); there is no “Class 10 million”—it should be Thousand-level , the smaller the cleanliness grade number, the higher the cleanliness level. Pengchi Intelligence points out: the three key differences lie in the supply air area, filter configuration, outlet air velocity, and applicable scenarios.
1. Class 100 laminar flow ceiling (Class I clean operating room)
- Large air supply area, mainstream specifications 2400×2600mm Left and right, covering the operating table and surrounding critical areas.
- Configuration H14 Ultra-high-efficiency filter with shadowless lamp airflow compensation module
- Air outlet wind speed 0.25 0.35 m/s , vertical laminar flow, with large-area uniform downward air supply
- Indications: Orthopedic transplantation, cardiac surgery, craniocerebral surgery, and other large, high-risk procedures.
2. Class 1,000 laminar flow ceiling (Class II clean operating room)
- Moderate air distribution area, commonly seen. 1800×2400mm
- H13 High-efficiency filters are generally not equipped with shadowless lamp compensation devices.
- The wind speed is slightly lower, and the airflow coverage extends only to the surgical core area.
- Indications: Routine large and medium-sized surgeries in general surgery, urology, and other specialties.
3. Class 10,000 laminar flow ceiling (Class III clean operating room)
- The air supply area is smaller, 1200×1800mm For the main purpose
- H13 High-efficiency filter, without airflow compensation component
- Lower supply air volume, relying on localized ventilation. + The room’s overall purification system jointly maintains a Class 10,000 cleanroom environment.
- Indications: Outpatient operating rooms, otolaryngology, and minor plastic surgery procedures.
Pengchi Intelligence tells you: To achieve the corresponding cleanliness class, in addition to the laminar flow ceiling, it is also necessary to integrate a suitable air handling unit, enclosure structure, and return-air system; only a complete, coordinated system can meet the acceptance criteria.
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