Reverse Laminar Air Flow

Laminar Air Flow is designed to provide Class 100 working environment at rest with built in scavenging system to ensure product, operator as well as surrounding environment protection. The Reverse Laminar Airflow Bench finds a major application in sampling and dispensing. Majorly used for mixed airflow stream to control the hazardous emission of dust powder during dispensing or sampling process. This ensures to draw powder aerosols away from the operator and the operating environment protecting products and providing safe working conditions for personnel.

Reverse Laminar Air Flow Unit operates on a re-circulatory airflow principle providing containment by air movement. The pre-filters at the base of the rear wall capture the airborne contaminants generated. Intake velocity at pre-filters increases to ensure scavenging effect. A small percentage of air is discharged from the booth through the bleed exhaust HEPA filter to maintain the working space under negative pressure.

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

Standard Model Available :
Model No. Working Area (mm) Airflow Velocity
(Down flow)
Air Cleanliness Air Flow
RLAF-48-36 1260 X 955 X 2170      
RLAF-48-48 1275 X 1260 X 2170 0.45±0.05mps/ ISO Class 5 (ISO 14644-1:1999 (E)) / Vertical -
RLAF-72-48 1875 X 1275 X 2170 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.
Exhaust
HEPA filter :
Imported Minipleat HEPA filter with hot melt technology, which conforms to EU-14 Grade at exhaust position with an efficiency rating better than 99.999% for 0.3µ.
Intermediate Filter : Intermediate filter are made from non-woven synthetic with HDPE mesh; conforms to EU 7 Grade, with an efficiency rating better than 95% down to 3µ.
Pre-filter : Pre-filter are made from non-woven synthetic with HDPE mesh; conforms to EU 4 Grade, with an efficiency rating better than 90% down to 10µ.
Motor
Blower 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: 2 Nos.) to monitor pressure drop across HEPA & Intermediate filter and (0-10 mm 1 No.) across prefilter.
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 (with PAO Solution).
Side Panel : SS 304 Double Walled Side Panels.
Electrical Supply : 230V AC 1- Ø 50HZ / 415V AC 3-Ø 50HZ
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

Safe change bag in / bag out arrangement for filters

Double skin side panels with view windows

Service access from front / back / side

Horizontal internal coving at base