Unidirection Air Flow

Unidirectional Air Flow Benches offers highest product protection for samples and processes by providing ISO Class 5 particle free work area. Unidirectional Air Flow Unit draws air in through the top of the unit through a pre-filter, through a plenum and vertically down over the work-surface and past the lap of the operator. It has the advantage of not pushing air into the face of the operator as in a vertical laminar flow cabinet.

It prevents contamination from operator and environment to work area. The laminarity of the flow prevents cross contamination between the items handled in the working space. These units are suitable for the handling of non-hazardous products, sensible to dust and/or to contamination wherever operator protection is not required.

Unidirectional Air Flow Units with a variety of standard dimensions also our cabinet can be custom engineered to any size. Unidirectional air flow are available in powder coated Mild Steel, SS 304 / 316 / 316L or a combination of both.

Standard Model Available :
Model No. Hepa Filter Area (mm) Airflow Velocity
(Down flow)
Air Cleanliness Air Flow
UDAF-48-36 1220 X 915 0.45±0.05mps / ISO Class 5 (ISO 14644-1:1999 (E)) / Vertical
UDAF-48-48 1220 X 1220 90(fpm) Class 100 (U.S.FED STD 209 E) -Recirculatory
Technical Specification :
Supply filter : Imported Minipleat HEPA filter with hot melt technology, which conforms to EU-14 Grade at supply position with an efficiency rating better than 99.999% down to 0.3µ.
Pre-filter : Fresh Air filter are made from non-woven synthetic with HDPE mesh; conforms to EU 6 grade, with an efficiency rating better than 95% down to 5µ.
Alower Assembly :
Motor blower designed of statically and dynamically balanced for supply of sufficient capacity and static pressure to take care of airflow requirement for entire life of HEPA.
Differential Pressure Gauge : Dwyer Make Magnehelic Gauge (0 -25 mm: 1 No.) to monitor pressure drop across HEPA.
Lighting : Fluorescent light (250 Lux) at work surface
ON/OFF Switches : SS ON/OFF switches for motor & lights
Switch Socket : 6/15 amp single-phase switch socket use for external equipment
Control Panel : Electrical control panel mounted on the side panel of the unit.
DOP Port : DOP test port at upstream of HEPA filter to personnel for carrying out the HEPA filter integrity test.
Side Panel : Double skin side panels with glass view panel
Electrical Supply: : 230V AC 1Ø 50Hz / 415V AC 3Ø Hz
Noise Level : Less than 67 dB on scale ‘A’ when ambient is not greater than 55 dB on scale ‘A’
Vibration Level : Minimum
Optional Accessories :

Front Anti-static PVC Curtains

Audio visual alarm indicating condition of HEPA filters

Clean down timer with operation hold indicator

VFD based control systems

Photohelicguage / Digital pressure gauge to monitor of pressure drop across filter.

Sodium vaporlamps

Flame proof fitting