H14 grade non-separator HEPA filters have been installed in batches at leading hospitals in Beijing; On-site testing has confirmed that they fully comply with cleanliness standards. 

I. Project Background: Deterioration of filters in hospital cleanrooms poses safety risks
The Beijing Grade-A hospital participating in this project has been operating operating rooms and storage facilities for sterile dressings for many years. The original high efficiency filters experienced problems such as damage to the filter media, air leakage due to sealant failure, and significant reduction in filtration efficiency. Regular inspections invariably recorded exceeding the permissible level of particles in the air of clean zones, which created medical risks associated with the possibility of surgical infections and secondary contamination of dressings.
The hospital's procurement and logistics team analyzed various filter options and came up with three key mandatory requirements:
Filters must meet the highest efficiency class H14 and provide a 0.3 µm particle removal efficiency of ≥99.995% to meet Class 100 (ISO 5) cleanliness standards in operating rooms;
Products must be characterized by low volatility and minimal dust emission, as well as the absence of the release of harmful substances, thereby ensuring compliance with sanitary and hygienic standards for medical institutions;
After installation, ensure that particle levels are tested on site and a compliance report is provided.
Our company’s solution, specially adapted for the conditions of medical institutionsNon-separator HEPA filter class H14 We are fully compliant with this comprehensive replacement and renovation project.

II. Key performance benefits of a specialized H14 grade non-separator HEPA filter for medical use

Highly efficientNon-separator HEPA filter class H14, used in this replacement project, was specifically designed for cleanrooms in healthcare facilities; Unlike standard industrial models, it has characteristics adapted to the harsh operating conditions inherent in healthcare facilities:

1. Highest filtration accuracy (Class H14) meeting Class 100 operating room standards
Using ultra-fine glass fiber composite material, the filter achieves a consistent cleaning efficiency of over 99.995% for suspended particles as small as 0.3 microns. It effectively traps airborne bacteria, fungi and dust particles, preventing the risk of cross-contamination directly at the source. The filter is suitable for use in operating theatres, sterile dressing storage areas and clean areas of clinical laboratories.
2. One-piece seal design, eliminating air leakage and contamination
The high-density foam sealing strip is securely attached to the frame, ensuring a perfect fit to the clean air unit mounting groove and preventing air leakage. The design without separators (separators), made using hot-melt adhesive, eliminates the risk of corrosion characteristic of metal frames, and also prevents the filter material from shifting or cracking during long-term operation in conditions of stable temperature and humidity.
3. Medical grade filter material with low tendency to separate fibers (prevent secondary pollution)
Before shipping, the filter material undergoes special anti-dust treatment and cleaning with an air flow. It does not emit fibers or harmful volatile substances during installation and operation, making it an ideal solution for sterile hospital environments to ensure the cleanliness of surgical instruments and dressings.
4. Lightweight and compact design for direct replacement of existing filters
Thanks to standardized universal sizes, the filter can be installed to replace the old one without making changes to the housing of the existing ventilation system. Easy on-site installation and disassembly can significantly reduce operating room downtime and minimize disruption to daily hospital operations.
III. On-Site Replacement and Particle Testing: Complete Full Service
After delivery to the hospital, our service team dismantles old filters, cleans the internal chamber of the ventilation unit and installs new onesNon-separator HEPA filter class H14Throughout the installation process, filters are installed in their designated locations using standardized procedures to prevent secondary contamination of the clean area with dust.
After the installation of all filters is completed and the system has been running for two hours in ventilation mode, a spot check of air cleanliness in the operating room and dressing area is carried out using a professional particle counter.