Himalayan Steel Industries
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Mobile LAF Sterile Transfer Trolley (MLAF)
Laminar Airflow
Finish: Electropolished Bed (Ra < 0.4 µm)100% Traceable SS
Himalayan Steel Precision Series

Mobile LAF Sterile Transfer Trolley (MLAF)

Provides unbroken Grade A / ISO Class 5 sterile laminar protection during the transport of sterilized vials, rubber stoppers, and aseptic tools between autoclaves, depyrogenation tunnels, and sterile filling suites.

Available Metallurgies
SS 316L Work BedSS 304 Outer Body
Regulatory Compliance
ISO 14644-1 Class 5EU-GMP Grade A TransportcGMP Compliant
✓ Direct factory prices•✓ Material Test Certificate (MTC 3.1) included•✓ Pan-India Delivery

Engineering Overview & Fluid Dynamics

Active contamination barrier and laminar downflow principles

The Himalayan Steel Mobile Laminar Air Flow Trolley (MLAF) solves the critical pharmaceutical risk of contamination during the transit of sterile items across cleanroom corridors. Equipped with an on-board sealed maintenance-free (SMF) gel battery bank and inverter system providing up to 4 hours of autonomous operation, the trolley maintains a continuous 0.45 m/s vertical laminar downflow through certified mini-pleat H14 HEPA filters while unplugged and rolling between production suites.

Technical Engineering Specifications

Standard dimensional tolerances, electrical parameters, and air quality ratings

Cleanliness StandardISO Class 5 / Grade A sterile zone throughout transit
Airflow DirectionVertical laminar downflow (0.45 ± 0.1 m/s)
Supply FiltrationMini-pleat H14 HEPA filter (99.997% @ 0.3 micron)
Pre-FiltrationWashable stainless steel mesh + EU-4 synthetic pre-filter
Battery BackupIntegrated SMF Gel / Lithium battery bank providing 3 to 4 hours runtime
Charger SystemAutomatic smart onboard charger with retractable cable reel & mains plug
Castor Wheels4 heavy-duty conductive non-marking PU swivel wheels (2 with foot brakes)
EnclosureDrop-down transparent flexible anti-static PVC curtains or hinged acrylic doors
Pressure GaugeIntegrated Dwyer Magnehelic 0–25 mm WC gauge
Push HandlesErgonomic continuous stainless steel tubular push handles on both ends

Standard Dimensional Matrix

Fabrication schedule comparison in Imperial and Metric standards

Custom dimensions available on request
Size (Feet)Metric (MM)Internal Chamber (W x D x H)External Footprint (W x D x H)
Compact Single Tray750 x 600 x 1850 mm650 x 500 x 850 mm850 x 700 x 1950 mm
Standard Multi-Tier1000 x 650 x 1850 mm900 x 550 x 850 mm1100 x 750 x 1950 mm
High-Capacity Dual Bay1300 x 750 x 1900 mm1200 x 650 x 900 mm1400 x 850 x 2000 mm
Note:External dimensions include top motor plenum and side return ducting. Himalayan Steel Industries custom-tailors flange profiles to fit any wall panel thickness (50 mm, 80 mm, 100 mm).

Cleanroom Construction & Architectural Design

cGMP sanitary fabrication details from our Baddi engineering works

Low-Center-of-Gravity Chassis

Batteries and inverter are mounted in the bottom ballast compartment, ensuring rock-solid stability during manual pushing over doorway floor tracks.

Seamless Electropolished Bed

Interior tray area is formed from AISI 316L stainless steel with coved corners and perforated bottom sheet for smooth laminar flow return.

Intelligent Battery Management Display

Digital dashboard indicates battery percentage, remaining runtime minutes, charge current, and filter differential pressure.

Automatic Mains Transfer Switch

Plugging into wall power instantly switches motor power to AC mains while simultaneously recharging onboard batteries seamlessly.

DOP/PAO In-Situ Test Port

Convenient test port permits aerosol scan validation without dismounting the overhead motor blower module.

Full-Perimeter Bumper Guards

Non-marking food-grade silicone wrap-around bumpers prevent wall scuffing in narrow cleanroom corridors.

Standard Operating Protocol (cGMP SOP)

Standard operating guidelines and contamination control sequence

SOP REFERENCE GUIDE
Objective
To establish operating and battery charging procedure for the Himalayan Steel Mobile Laminar Air Flow Trolley.
Scope
Applies to all transfers of sterile components across cleanroom grades using mobile LAF trolleys.
Responsibility
Sterile Area Operators, Autoclave Attendants, and Engineering Technicians.

Step-by-Step Material Transfer Sequence

1
Verify the trolley has been charged overnight and the battery meter displays 100% capacity.
2
Start the blower switch and verify that the Magnehelic gauge shows normal operational differential (10 to 18 mm WC).
3
Allow the trolley to run for 10 minutes to establish Class 100 sterile equilibrium inside the chamber.
4
Wipe down the SS 316L internal shelves with 70% sterile IPA before loading items.
5
Load sterile wrapped components directly from the autoclave or oven into the mobile chamber; close the front curtain/door immediately.
6
Unplug the mains charging cord and let it retract into the built-in reel.
7
Transfer the trolley smoothly through cleanroom corridors to the sterile filling room at a steady walking pace.
8
Upon arrival, connect the power cord to the local cleanroom wall outlet to preserve battery power while unloading.

Sanitization & Wipe-Down Protocol

  • Sanitize interior bed and handles before and after each sterile transfer with 70% IPA.
  • Wipe clean exterior walls and polyurethane wheels after transit through corridors.
  • Wash bottom pre-filter mesh monthly in purified water.

Fail-Safe Interlock Protection

  • Low battery audible alarm sounds when remaining runtime drops below 20 minutes.
  • Foot brake locks prevent trolley rollaway when stationary on sloped drainage floors.

Optional Engineering Customizations

Site-specific hardware adaptations

  • Lithium-iron-phosphate (LiFePO4) lightweight battery upgrade for 6+ hours runtime
  • Rigid clear polycarbonate hinged front doors with magnetic latching
  • Adjustable perforated intermediate stainless steel shelves
  • Battery low-voltage audible warning buzzer and flashing alert beacon
  • Flameproof battery compartment enclosure for ATEX solvent zones

Quality Validation Package (DQ/IQ/OQ)

Audit-ready documentation for US FDA and EU-GMP inspections

  • Design Qualification (DQ) Documentation & Center-of-Gravity Analysis
  • Installation Qualification (IQ) Battery & Inverter Test Protocols
  • Operational Qualification (OQ) Transit Velocity & Battery Endurance Test
  • DOP/PAO HEPA Filter Integrity Scan Certificate
  • Particle Count Validation Report in Active Transit Mode (ISO Class 5)
  • Electrical Safety & Earthing Continuity Certificate

Cleanroom Design Highlights

  • Seamless Grade A sterile protection maintained during cleanroom corridor transit
  • Onboard 4-hour battery inverter system ensures zero disruption when unplugged
  • Conductive antistatic non-marking castors discharge static electricity safely
  • Removable perforated SS 316L shelf trays allow vertical airflow penetration

Target Pharmaceutical Applications

Sterilized Rubber Stopper & Seal Transport from Autoclave
Depyrogenated Vial Transport to Sterile Filling Line
Sterile Filling Machine Change-Part Transport
Aseptic Bulk Liquid Inoculum Tank Relocation
Lyophilizer Tray Loading and Unloading Transfers

Explore Other Equipment Divisions

Vertical Laminar Air Flow (Stand Mounted VLAF)

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.

Horizontal Laminar Air Flow Clean Bench (HLAF)

Horizontal Laminar Air Flow Clean Bench (HLAF)

Horizontal crossflow ISO Class 5 clean bench with back-to-front laminar protection, HEPA H14 filtration, and SS 304/316 worktable.

Ceiling Suspended Laminar Air Flow (CLAF)

Ceiling Suspended Laminar Air Flow (CLAF)

Overhead suspended sterile downflow hood for aseptic filling lines, vial conveyor shielding, and reactor vessel transfers.