Core Air Purification Equipment

1. ‌High-Efficiency Particulate Air (HEPA) / Ultra-Low Penetration Air (ULPA) Filters‌
   As the final stage of the purification system, these filters effectively remove particles ≥0.3 microns and bacteria, achieving air cleanliness levels of ISO 5 or higher. The key difference between HEPA and ULPA filters lies in their filtration efficiency, with the latter used in more stringent cleanroom environments.

2. ‌Fan Filter Unit (FFU)‌
   A core component of cleanrooms, FFUs are typically installed in the ceiling to control particles via HEPA or ULPA filters, maintaining positive pressure to prevent external contaminants from entering. They can be modularly connected and are suitable for cleanrooms, clean benches, and localized ISO 5 environments.

3. ‌Laminar Flow Hood‌
   Using laminar airflow design, it ensures uniform distribution of clean air, avoiding dead zones and recirculation, thereby maintaining efficient airflow. It is primarily used to provide localized high-cleanliness areas, such as precision operation zones.

4. ‌Air Shower & Pass-Through Chamber‌
   Air showers are used to blow off dust from personnel or goods entering clean areas, effectively reducing contamination sources. Pass-through chambers are designed for small-item transfers between clean and non-clean zones, minimizing door openings and contamination risks.

5. ‌Pass Box‌
   Used for transferring small items between clean and non-clean areas, reducing the frequency of cleanroom door openings and contamination risks.

Supporting Purification Equipment

• ‌Pre-Filters & Medium-Efficiency Filters‌: Pre-filters capture large particles (e.g., dust, hair), while medium-efficiency filters trap smaller particles, collectively protecting downstream HEPA filters.
• ‌Air Disinfection Equipment‌: Such as UV ozone sterilizers, used for air and surface disinfection to enhance cleanliness.
• ‌Temperature & Humidity Control Equipment‌: Like constant-temperature incubators and ultra-low temperature freezers, maintaining stable lab conditions.

Equipment Workflow

The air purification system typically employs a multi-stage filtration process: "pre-filter → medium-efficiency filter → HEPA filter." Air passes through these stages sequentially, ensuring the air supplied to clean areas meets the required cleanliness standards.