Air Filtration Solutions for Healthcare & Pharmaceuticals

1. Key Application Areas

Operating Rooms & Intensive Care Units (ICUs)

l High-Efficiency Particulate Air (HEPA) Filters: Used for terminal filtration, providing ≥99.97% efficiency at 0.3-micron particles. These filters capture bacteria, viruses, and airborne contaminants to prevent post-surgical infections. Operating rooms employ unidirectional airflow designs with HEPA filters to ensure clean air flows from sterile to contaminated areas.

l Medium-Efficiency Filters: Used as pre-filters to capture dust, pollen, and other medium-sized particulates, extending the lifespan of HEPA filters.

l Fan Filter Units (FFU): Provide localized ultra-clean airflow, ensuring a contamination-free environment for critical surgical procedures.

l Air Showers: Installed at entry points to remove contaminants from personnel and equipment before entering sterile areas.

Sterile Pharmaceutical Manufacturing

l Ultra-Low Penetration Air (ULPA) Filters: Required for biological drug and vaccine production, with ≥99.999% efficiency for 0.12-micron particles. These filters maintain sterile conditions to prevent microbial contamination.

l Pre-Filters (Primary & Medium Filters): Remove larger dust and fiber particles, protecting downstream filtration systems and optimizing overall air quality.

l Cleanroom Equipment: Includes laminar flow workstations, air handling units (AHUs), and clean benches equipped with HEPA/ULPA filters to create controlled environments with ISO Class 5-7 cleanliness levels.

l Airflow Control Systems: Maintain positive pressure to prevent contamination from external air sources.

Laboratories & Diagnostic Centers

l HEPA + Activated Carbon Filters: HEPA filters remove fine particulates, while activated carbon layers absorb volatile organic compounds (VOCs) and chemical vapors (e.g., formaldehyde, laboratory exhaust gases). This setup ensures compliance with harmful gas control standards such as GB/T 34012.

l Biological Safety Cabinets (BSCs): Utilize HEPA filtration to maintain a sterile and contained environment for microbiological testing.

l Negative Pressure Containment: Used in pathogen research laboratories to prevent airborne biohazards from spreading.

Negative Pressure Isolation Rooms

l Dual-Layer HEPA Filters: Prevent pathogen leakage in hospital isolation rooms, ensuring that contaminated air does not re-enter the facility. Designed to meet JGJ/T 440-2018 biosafety standards.

l Pressure Control Systems: Maintain negative pressure to contain airborne infectious agents while ensuring safe exhaust through high-efficiency filtration.

l Air Exchange & Purification Units: Ensure continuous dilution and removal of infectious aerosols, providing a safer healthcare environment.

2. Air Filtration & Purification Workflow

3. Technical Summary of Filtration Solutions

l Primary Filters (G3-G4)

Function: Capture ≥5µm particles (dust, fibers), protecting downstream filters.

Applications: Pre-filtration in cleanrooms, laboratories, and hospital ventilation systems.

l Medium-Efficiency Filters (MERV 13-16 / F7-F9)

Function: Capture PM1.0–PM2.5 particles, including bacteria-carrying aerosols.

Applications: Operating rooms, pharmaceutical air handling units, and general hospital filtration.

l High-Efficiency HEPA/ULPA Filters (H13-U17)

Function: Capture ≥0.3µm (HEPA) and ≥0.12µm (ULPA) particles, ensuring sterile conditions.

Applications: Pharmaceutical cleanrooms, surgical environments, isolation wards.

l Specialized Filtration Equipment

Activated Carbon & Chemical Filters: Remove chemical vapors and odors from hospital and lab environments.

Explosion-Proof Design: Required for pharmaceutical solvent handling areas.

Humidity Control Systems: Used in pharmaceutical production and medical storage to prevent contamination and degradation.