FFU (Fan Filter Unit)
Ceiling-mounted fan filter unit with 99.999% HEPA filtration efficiency, delivering 0.45m/s airflow for cleanroom and laboratory particle control applications.
Louise Corscadden, PhD
Neuroscience · ConductScience
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The ConductScience Fan Filter Unit (FFU) is a ceiling-mounted air filtration system designed to maintain controlled particulate levels in cleanroom and laboratory environments. The system combines a high-efficiency HEPA filter (99.999% efficiency at 0.3μm) with an integral centrifugal blower to deliver consistent, filtered airflow at 0.45m/s ±20%. Available in three sizes (975mm, 1175mm, and 1475mm widths), the FFU provides localized clean air zones for critical research applications requiring low particulate contamination.
The aluminum-coated zinc plate construction ensures durability while maintaining low noise operation (≤60dB). The unit operates on universal power supplies (220V or 110V, 50/60Hz) with 110W power consumption, making it suitable for integration into existing laboratory infrastructure. The modular design allows for scalable installation to create comprehensive cleanroom environments or targeted clean zones for sensitive research protocols.
How It Works
The FFU operates through mechanical filtration combined with controlled air circulation. The built-in centrifugal blower draws ambient air through the HEPA filter medium, which captures particles through three primary mechanisms: impaction, interception, and diffusion. Particles larger than 0.3μm are primarily captured by impaction and interception as they follow airflow streamlines through the filter media, while smaller particles are captured through Brownian motion diffusion.
The HEPA filter achieves 99.999% efficiency at the most penetrating particle size (0.3μm), effectively removing bacteria, dust, pollen, and other airborne contaminants. The centrifugal blower maintains consistent airflow velocity of 0.45m/s ±20% across the filter face, creating a uniform laminar flow pattern that sweeps particles away from the protected work area. The aluminum-coated zinc construction provides structural integrity while the low-noise design (≤60dB) minimizes acoustic interference with laboratory operations.
Features & Benefits
Automation Level
- manual
FFU 1200
- FFU 1500
External Size(W*D*H)
- 975*575*380mm
1175*575*380mm
- 1475*575*380mm
Air Velocity
- 0.45m/s±20%
HEPA Filter
- 99.999% efficiency at 0.3μm
HEPA Filter Size(W*D*H)
- 970*570*69mm
1170*570*69mm
- 1470*570*69mm
Blower
- Built-in centrifugal blower
Noise
- ≤60dB
Consumption
- 110W
Shell Material
- Aluminium coated zinc plate
70kg
- 90kg
Brand
- ConductScience
Research Domain
- Analytical Chemistry
- Cell Biology
- Environmental Monitoring
- Industrial Hygiene
- Materials Science
- Microbiology
- Pharmaceutical QC
Power/Voltage
- AC220V±10%, 50/60Hz; 110V±10%, 50/60Hz
Weight
- 60kg
Weight
- 60.0 kg
Dimensions
- L: 38.0 mm
- W: 97.5 mm
- H: 57.5 mm
| Feature | This Product | Typical Alternative | Advantage |
|---|---|---|---|
| HEPA Filter Efficiency | 99.999% at 0.3μm | Standard HEPA filters typically offer 99.97% efficiency | Higher efficiency provides greater assurance of particle removal for critical applications requiring ultra-clean conditions. |
| Air Velocity Control | 0.45m/s ±20% controlled airflow | Many units provide less precise velocity control | Consistent airflow velocity ensures predictable particle sweep patterns and uniform protection across the work area. |
| Noise Level | ≤60dB operation | Industrial units often exceed 65-70dB | Lower noise levels maintain comfortable working conditions for extended laboratory operations and communication. |
| Power Consumption | 110W continuous operation | Similar capacity units may consume 150-200W | Reduced energy consumption lowers operating costs for continuous operation in laboratory environments. |
| Size Options | Three width options (975mm, 1175mm, 1475mm) | Many manufacturers offer fewer size variants | Multiple size options allow optimization of coverage area and air change rates for specific workspace requirements. |
| Power Supply Flexibility | Dual voltage capability (220V/110V) | Single voltage operation is common | Universal power compatibility simplifies installation in diverse international laboratory settings without voltage conversion equipment. |
The FFU combines high-efficiency filtration (99.999% at 0.3μm) with controlled airflow delivery and quiet operation in a modular ceiling-mounted design. The integrated centrifugal blower and dual voltage capability provide installation flexibility while maintaining consistent performance specifications across three size variants.
Practical Tips
Verify airflow velocity at startup and quarterly using a calibrated anemometer at multiple points across the filter face.
Why: Ensures consistent particle removal performance and identifies potential filter loading or blower degradation early.
Monitor differential pressure across the HEPA filter monthly and maintain a replacement log with installation dates.
Why: Pressure monitoring provides early indication of filter loading before efficiency degradation affects clean area performance.
Position work activities upstream of the FFU airflow pattern to maximize particle removal from the workspace.
Why: Proper positioning leverages the laminar flow to sweep generated particles away from critical work areas.
If noise levels increase above specification, check for filter obstruction or blower bearing wear before operation continues.
Why: Increased noise often indicates mechanical issues that could lead to reduced airflow performance or equipment failure.
Document airflow measurements and filter change dates to establish performance baselines for your specific environment.
Why: Baseline data enables detection of gradual performance changes and supports validation of clean area maintenance protocols.
Ensure proper electrical grounding and verify power supply voltage matches unit specifications before installation.
Why: Incorrect electrical connections can damage the centrifugal blower or create safety hazards in laboratory environments.
Allow 15-20 minutes for airflow stabilization after startup before beginning critical work activities.
Why: Stabilization time ensures uniform velocity distribution and optimal particle removal efficiency across the protected area.
Inspect filter gasket seals during routine maintenance to prevent bypass of unfiltered air around the filter edges.
Why: Gasket integrity is critical for maintaining filtration efficiency as bypass air can compromise clean area particle levels.
Setup Guide
What’s in the Box
- Fan Filter Unit (FFU) main assembly
- HEPA filter (pre-installed)
- Mounting hardware kit (typical)
- Power cable (typical)
- Installation manual
- Performance certification (typical)
Warranty
ConductScience provides a one-year manufacturer warranty covering defects in materials and workmanship. Technical support includes installation guidance and maintenance recommendations to ensure optimal long-term performance.
Compliance
References
Background reading relevant to this product:
How do I verify the HEPA filter efficiency meets the specified 99.999% at 0.3μm?
Filter efficiency should be verified using a particle challenge test with monodisperse 0.3μm particles and downstream particle counting. Professional certification typically requires DOP or PAO aerosol testing equipment following standard protocols.
What maintenance schedule is recommended for optimal performance?
Monitor differential pressure across the filter monthly and replace when pressure drop exceeds manufacturer specifications or when particle counts downstream indicate reduced efficiency. Visual inspection of filter integrity should be performed quarterly.
Can multiple FFUs be operated together for larger clean areas?
Yes, units can be installed in arrays to cover larger areas. Ensure adequate spacing to prevent airflow interference and maintain uniform velocity profiles across the protected workspace.
What ceiling support requirements are needed for installation?
Ceiling structure must support unit weight (60-90kg depending on model) plus dynamic loads from blower operation. Consult structural engineer for installations in suspended ceiling systems or older buildings.
How does airflow velocity affect particle removal efficiency?
The specified 0.45m/s velocity provides optimal balance between particle capture and energy consumption. Higher velocities may improve particle sweep but increase noise and power consumption without proportional efficiency gains.
What particle size range is most effectively captured?
HEPA filters are most efficient for particles >0.3μm and <0.1μm due to different capture mechanisms. The 0.3μm specification represents the most penetrating particle size where efficiency is lowest but still 99.999%.
How do I validate airflow uniformity across the filter face?
Use a calibrated anemometer to measure velocity at a grid pattern across the filter face, typically at 15cm intervals. Velocities should be within ±20% of the 0.45m/s specification across 80% of the area.
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