Research & Development Center
Custom Air Filtration Solutions
Professional R&D team
CENCARB has always focused on the R&D and custom development of air filters. With a professional R&D team and comprehensive testing capabilities, we provide one-stop services from solution design and sample making to performance validation. We optimize key factors such as filtration efficiency, pressure drop, air tightness, and dimensional accuracy, while responding quickly to customized needs across different application scenarios. CENCARB is committed to delivering innovative, stable, and reliable filtration solutions for customers worldwide.
Core testing equipment
CENCARB relies on professional testing capabilities and a complete range of air filter testing equipment, including activated carbon H₂S adsorption testers and filter pressure drop testing systems, to evaluate and optimize the key performance of chemical filters and various air filters. Our testing process complies with U.S. standards, European standards, and ISO 16890 requirements for air filter performance evaluation.
Looking ahead, CENCARB will continue to strengthen its product R&D and validation capabilities, providing global customers with more stable and efficient air filtration solutions.
CENCARB Air Filter Testing Services & Results
Test Items:
Adsorption (purification) performance test of gaseous pollutant SO2, including:
1) Initial removal efficiency test
2) Adsorption capacity test under specific penetration rate
3) Resistance test under specified face velocity
Test Conditions:
| Sample Model | GF-S2-24244 |
| Filter Type | Honeycomb Activated Carbon Filter |
| Sample Size | 24*24*4 inches |
| Test Gas Type | Acid Gas |
| Test Gas | SO₂ |
| Test Airflow Rate | 1674±1.5 m3/h |
| Initial Concentration | 486±3% ppb |
| Pollutant Concentration for Adsorption | 9.20±3% ppm |
| Temperature | 24±0.5 ℃ |
| Relative Humidity | 26±1.5 %RH |
| Face Velocity | 1.25±0.01 m/s |
| Test Termination Conditions | 50% |
| Test Instrument | Thermo 450i |
Test Results:
| Face Velocity (1.25 m/s) Resistance (Pa) | 63 |
| Average Initial Efficiency (%) | 80.9 |
| Cumulative Adsorption Capacity at 70% Termination Efficiency (g) | 18.5 |
| Cumulative Adsorption Capacity at 70% Termination Efficiency (g) | 284.6 |
| Cumulative Adsorption Capacity at 70% Termination Efficiency (g) | 365.3 |
Pollutant capacity test: efficiency over time & efficiency varies with pollutant capacity
Upstream concentration stability test: pollutant capacity test & initial efficiency test
Pollutant capacity test: efficiency over time
Pollutant capacity test: efficiency varies with pollutant capacity
Upstream concentration stability – initial efficiency test
Upstream concentration stability – pollutant capacity test
Custom Air Filter Process
We can customize any air filter you need for your business.
Requirement Confirmation
Confirm operating conditions, installation dimensions, filtration grade, temperature and corrosion resistance, materials, and structural design.
Drawing Design & Quotation
Our engineers produce custom CAD drawings, optimise the structure, calculate costs, provide quotations, and confirm specifications and delivery times.
Sample Making & Test
Produce samples based on drawings; conduct tests for filtration efficiency, airflow resistance, airtightness, and dimensions; customer performs on-site installation and acceptance testing.
Raw Material Preparation
Prepare materials such as activated carbon, metal frames, sealants, and protective mesh.
Mass Production
Automated pleating to increase filter media surface area → frame bending and assembly → multi-layer media lamination → PU integral seal molding; process various filter elements according to standards.
Finished Product Inspection
Re-inspect dimensions, appearance, filtration efficiency and sealing integrity; ensure every product meets customer requirements.
Packaging & Shipment
Individual moisture-proof packaging and pallet reinforcement; neutral export packaging available.
After-Sales Service
Product batch traceability and installation guidance; rapid scheduling for repeat orders; support for minor specification adjustments and
urgent customisation.