Professional Services
Full-Range Filter Replacement & Disposal Service
Product Overview
Baisheng Tech provides one-stop services for full-range filter replacement, removal, waste disposal, and subsequent validation for cleanrooms, industrial facilities, and commercial HVAC systems. Coverage includes pre-filters / medium filters / HEPA / ULPA / activated carbon chemical filters / high-temperature filters. Work is performed by certified technicians per SOP, coordinated with night and holiday shutdown windows. Old filters are properly processed per waste disposal regulations, and upon installation of new filters, airflow balancing and PAO leak testing are performed immediately to ensure seamless continuation of clean environment operations.
Features & Specifications
| Item | Service Content / Standard |
|---|---|
| Service type | Filter replacement + old filter removal + waste disposal + installation validation |
| Applicable filters | Pre-filter / Medium / HEPA / ULPA / Activated carbon / High-temperature / FFU filters |
| Applicable facilities | Semiconductor/optoelectronic cleanrooms, biomedical GMP, hospitals, industrial facilities, commercial HVAC |
| Work schedule | Coordinated with customer shutdown windows (night / weekend / holidays) |
| Waste disposal | Per waste management law, legal disposal contractors, manifest traceability provided |
| Protection level | Technicians equipped with cleanroom suits, respiratory protection, chemical protection gloves |
| Validation items | Airflow balancing / pressure differential confirmation / PAO leak testing / cleanliness retest |
| Delivery documents | Replacement record form + waste manifest + validation report + certification label |
Detailed Description
## Service Overview
Baisheng Tech provides one-stop "full-range filter replacement + waste disposal + installation validation" services for cleanrooms, industrial facilities, medical institutions, and commercial HVAC systems. From replacement planning, on-site construction, old filter packaging and removal, new filter installation to completion validation — all handled by Baisheng's technical team. Customers need not coordinate multiple contractors; a single point of contact completes entire-facility filter replacement operations.
## Service Scope
- **Pre-filters**: Synthetic fiber, non-woven, bag filters, washable metal mesh
- **Medium filters**: F5~F9 bag filters, V-Bank, paper-frame pleated medium filters
- **HEPA / ULPA**: H13 ~ U16, FFU filters, laminar flow hood filters, BSC / Isolator filters
- **Chemical filters**: Activated carbon honeycomb, packed, V-Type, CPZ filters, lithography PCDA
- **High-temperature filters**: 80°C ~ 500°C various grades of high-temperature HEPA
- **Special filters**: Bag-In/Bag-Out, nuclear, BIBO filters containing radioactive materials
## Standard Construction Procedure
1. **Pre-survey**: Confirm filter model, quantity, specifications, installation location and shutdown windows; produce replacement construction plan
2. **Material preparation and scheduling**: Prepare new filters per customer brand/grade requirements, arrange technicians and waste removal vehicles
3. **Shutdown and zone control**: Coordinate with customer shutdown SOP, set up warning zones, lay dust-proof walkways, activate local exhaust
4. **Old filter removal**: Technicians don cleanroom suits and respiratory protection, remove filters piece by piece and immediately seal in double-layer PE bags on-site
5. **Frame cleaning**: Clean filter frame slots, pressure strips, and sealing surfaces with clean wipes + IPA to ensure new filter seal
6. **New filter installation**: Install per arrow direction, standardize pressure strip tightening torque, firmly press sealing strips
7. **Airflow / pressure balancing**: Measure discharge face velocity, return air pressure differential, adjust to rated values
8. **PAO leak test validation**: Perform PAO Scan on HEPA/ULPA grade, confirm penetration ≤ 0.01%
9. **Cleanliness retest**: Retest ISO Class level with particle counter when necessary
10. **Waste removal**: Old filters removed by certified contractor, waste manifest issued
11. **Completion delivery**: Deliver replacement record form, waste manifest, validation report, certification label, photo records
## Safety and Protection
- **Personal protection**: Technicians wear disposable cleanroom suits, dust caps, shoe covers, nitrile gloves, P100-grade respirator masks throughout
- **Chemical filter removal**: Additional organic vapor cartridges, chemical protection gloves, full-face masks
- **Radioactive / biohazard filters**: Use Bag-In/Bag-Out contamination-free replacement method — filters never contact the environment
- **Local exhaust**: Mobile HEPA negative pressure units set up in work zones to prevent dust escape
- **Dust isolation**: PE sheeting + tape construction curtains establish isolation from adjacent areas when necessary
## Waste Removal and Compliance
| Filter Category | Waste Code | Disposal Method |
|---|---|---|
| General pre/medium filters | D-0499 general industrial waste | Certified contractor landfill or incineration |
| Activated carbon chemical filters | D-1002 / hazardous industrial waste | Reporting for reuse or professional incineration |
| HEPA/ULPA (semiconductor) | Classified by facility contamination nature | Processed per customer industrial waste flow |
| Biomedical/GMP filters | R-1201 infectious waste | Professional incineration, sterilization certificate provided |
| Radioactive filters | Per AEC regulations | Entrusted to certified processing institutions per law |
* All waste is provided with triplicate manifest traceability, which customers can retain as environmental audit documentation.
## Validation and Delivery Documents
- **Replacement record form**: Each filter's model, serial number, location, pressure differential before and after replacement
- **Airflow balance report**: Velocity measurement data and adjustment results for each discharge outlet
- **PAO leak test report** (HEPA/ULPA): Including scan trajectory and pass determination
- **Cleanliness retest report** (when necessary): Particle concentration measurement per ISO 14644-1
- **Waste disposal manifest**: Triplicate copy + waste vehicle factory exit certificate
- **Construction photo records**: Photos of removal, installation, cleaning, validation throughout the process
- **Certification label**: Each new filter labeled with replacement date and next recommended replacement date
## Replacement Cycle Recommendations
| Filter Type | Recommended Replacement Cycle | Determination Criteria |
|---|---|---|
| Pre-filter | 1 ~ 3 months | Pressure differential reaches 2x initial / visible soiling |
| Medium filter | 6 ~ 12 months | Pressure differential reaches 1.5 ~ 2x initial |
| HEPA (H13/H14) | 3 ~ 5 years | Final pressure differential / PAO leak test failure |
| ULPA (U15/U16) | 5 ~ 8 years | Final pressure differential / leak test failure |
| Activated carbon chemical filter | 6 ~ 24 months | Breakthrough detection / odor breakthrough |
| High-temperature HEPA | 1 ~ 3 years | Pressure differential / high-temperature degradation inspection |
* Actual replacement cycles depend on on-site load, contamination source type, and operating hours. Regular pressure differential monitoring and annual PAO leak testing are recommended.
## Target Customers
- Semiconductor, panel, OLED, LED, photovoltaic wafer fabs
- Biotech pharmaceutical GMP factories, Chinese/Western pharmaceutical plants, API plants
- Hospital operating rooms, ICU, negative pressure wards, PCR laboratories, BSL laboratories
- Food factories, dairy plants, prepared food processing plants
- Chemical plants, coating plants, electronics assembly plants
- Museum collection rooms, archives, airport towers
- Commercial office buildings, MRT/high-speed rail stations, data centers
## Service Commitment
- Island-wide on-site service, coordinated with night and holiday shutdown windows
- Legal waste disposal with complete manifest traceability
- Free post-replacement airflow balancing and pressure differential confirmation
- Optional PAO leak testing, cleanliness retest, microbiological sampling
- Single point of contact; any anomalies during construction immediately reported and addressed
