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Surface Extraction Systems

Surface Extraction Systems

Downdraft units exist to remove hazardous dust that results from laboratory work. This can include anything from asbestos testing and seedling inoculations to forensic tasks, pollen handling, and weighing chemical powders.

It is essential that any downdraft units operate effectively and efficiently, protecting the operator and others working in the laboratory.

TPE has created two downdraft units suited to this task.

Both the Laminair downdraft unit and the mobile bench have optional alternatives and features that can ensure your downdraft unit is ideally suited to your laboratory. Please contact TPE to discuss your options.

The Laminair® Downdraft Unit

The Laminair® downdraft bench unit draws air from the room into its perforated work surface tray, preventing dust particles from escaping into the room and into the lungs of workers. This airflow moves to the rear of the unit and into a pre-filter and then a HEPA filter before exhausting back into the room.
This unit also features an exhaust fan with adjustable speed, a recessed fluorescent light, and an LED indicator that displays the need to replace the HEPA filter. The pre-filter exists to remove larger dust particles from the airflow thus extending the life of the HEPA filter.

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The Mobile Downdraft Bench

The TPE mobile downdraft bench offers ductless dust extraction that is easy to move wherever it is required within the laboratory.

This downdraft bench can be used for a number of different applications involving fine powders, and it is often used to great effect in police laboratories to extract fine fingerprint powder from the air.

With a chemical-resistant work surface and perforated steel grill that doubles as a worktop, and a dust extraction inlet, this bench offers a practical and versatile downdraft solution. It also utilises a pre-filter and HEPA filter to clean the air before expelling it back into the lab.

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Mobile Downdraft Unit, airflow path shown.

Perforated work surface/inet grill (Stainless steel option shown).

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Downdraft Benching System

Electrical 230v AC, 50 Hertz
Benching Powder-coated steel framework with chemical-resistant work surface
Shelving 5mm uPVC
Ducting Conventional PVC components
Fan Direct-drive motor with polypropylene, injection-moulded, Brinkmann® centrifugal fan

Laminair® Downdraft Unit

Electrical 230V AC single-phase; 2M cord with standard wall plug for bench outlet
External Dimensions 700mm W x 600mm D x 850mm in Height
Work Surface Dims 690mm x 500mm
Materials 5 or 6mm uPVC carcass; 2mm clear Polycarbonate side panels; perforated, powder-coated steel work surface tray, removable; stainless steel latches on filter-access door
Filters Pre-filter is washable; HEPA filter is a standard size and replaceable. Contact TPE for specific details.
Lights 2-20Watt screw-base compact fluorescent lamps
Exhaust Fan Fantech model 2GRE160, or equivalent
Initial Dimensions 564 W x 512 D x 1250mm H


  • A base stand for the Laminair® Downdraft Bench is available.
  • Use 304 Stainless Steel for the perforated work surface tray.

Mobile Downdraft Bench

Electrical 230V AC single-phase, with 2M cord and standard wall plug
Cabinet 18mm white MDF, 1400mm W x 750mm D x 900mm H above floor
Typical Work Surface Wilson Art Chemsurf high-density, chemical resistant laminate
Inlet Grill/Work Surface Powder-coated perforated steel, 700mm W x 500mm D
Exhaust Fan Variable Speed, capable of 180L/sec airflow volume
Filters H14 HEPA and G4 Pre-filter
Casters Four-75 mm diameter rubber wheels, two lockable


  • Upgrade perforated work surface to 304 Stainless Steel.
  • Larger bench units available.
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