Horizontal Laminar Air Flow Clean Bench (HLAF)
Provides horizontal unidirectional laminar air stream directed outwards toward the operator. Specially engineered for non-hazardous pharmaceutical media prep, culture transfers, and optical inspections where vertical obstacles must not impede laminar wash lines.
Engineering Overview & Fluid Dynamics
Active contamination barrier and laminar downflow principles
The Himalayan Steel Horizontal Laminar Air Flow Clean Bench provides high-purity ISO Class 5 laminar air streaming horizontally from the rear HEPA filter face toward the front operator opening. Because airflow moves in a straight horizontal vector across the entire work surface, tall bottles, test tube racks, and analytical apparatus do not disrupt the clean airflow over items placed upstream. This design offers superior contamination protection for non-toxic pharmaceutical formulations and cell culture media preparations.
Technical Engineering Specifications
Standard dimensional tolerances, electrical parameters, and air quality ratings
Standard Dimensional Matrix
Fabrication schedule comparison in Imperial and Metric standards
| Size (Feet) | Metric (MM) | Internal Chamber (W x D x H) | External Footprint (W x D x H) |
|---|---|---|---|
| 2 x 2 ft | 610 x 610 x 1200 mm | 610 x 550 x 550 mm | 760 x 850 x 1400 mm |
| 3 x 2 ft | 915 x 610 x 1200 mm | 915 x 550 x 550 mm | 1065 x 850 x 1400 mm |
| 4 x 2 ft (Industry Standard) | 1220 x 610 x 1200 mm | 1220 x 550 x 550 mm | 1370 x 850 x 1400 mm |
| 6 x 2 ft (Dual Operator) | 1830 x 610 x 1200 mm | 1830 x 550 x 550 mm | 1980 x 850 x 1400 mm |
Cleanroom Construction & Architectural Design
cGMP sanitary fabrication details from our Baddi engineering works
Acoustically damped and aerodynamically contoured rear plenum ensures air exits the entire HEPA surface at uniform velocity across all quadrants.
Work bed manufactured from single-sheet SS 316L with smooth rounded edges and a dished perimeter to contain liquid spills.
Curved stainless steel front sill creates a laminar slipstream that prevents eddy currents and turbulence at the operator interface.
Dynamically balanced forward/backward curved motorized blower equipped with multi-speed adjustment control.
Filter frame clamped against fluid gel sealing bed with perimeter tension bolts for zero bypass.
Structural 304 SS tubular under-bench stand fitted with 4 heavy-duty castors (2 lockable) and leveling rubber base pads.
Standard Operating Protocol (cGMP SOP)
Standard operating guidelines and contamination control sequence
Step-by-Step Material Transfer Sequence
Sanitization & Wipe-Down Protocol
- Clean work bed before each use with 70% IPA.
- Clean side clear acrylic panels with mild non-ammonia detergent and soft cleanroom microfiber.
- Clean pre-filters monthly with warm purified water.
Fail-Safe Interlock Protection
- Do not use HLAF clean benches for biohazardous pathogens, cytotoxic agents, or volatile toxic chemicals.
- UV lamp interlock cuts off automatically when LED light is switched on.
Optional Engineering Customizations
Site-specific hardware adaptations
- Fuel gas and vacuum utility service fixtures with brass needle valves
- Transparent front night cover blind with magnetic latching
- Magnehelic gauge with electronic limit alarm switches
- Stainless steel hanging utility rail for micro-pipettors
- Flameproof motor blower construction for ATEX Zone 2 environments
Quality Validation Package (DQ/IQ/OQ)
Audit-ready documentation for US FDA and EU-GMP inspections
- Design Qualification (DQ) Documentation & CAD Drawing
- Installation Qualification (IQ) Protocol Checklists
- Operational Qualification (OQ) Air Velocity Uniformity Mapping
- HEPA Filter Integrity Scan Certificate (DOP/PAO test)
- ISO 14644-1 Cleanliness Classification Report
- Material Test Certificate (EN 10204 Type 3.1)
Cleanroom Design Highlights
- Horizontal crossflow eliminates turbulence created by tall lab glassware and pipettes
- Full-depth seamless SS 316L work bed with no joints or dirt-harboring seams
- Front lip aerodynamic contour prevents room drafts from eddying into the clean zone
- Built-in DOP/PAO test port for direct filter validation without disassembly
Target Pharmaceutical Applications
Explore Other Equipment Divisions
Vertical Laminar Air Flow (Stand Mounted VLAF)
Stand-mounted ISO Class 5 clean bench with vertical laminar downflow, microswitch feather controls, and mini-pleat HEPA H14 filtration.
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Overhead suspended sterile downflow hood for aseptic filling lines, vial conveyor shielding, and reactor vessel transfers.
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