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.
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.
Mobile Downdraft Unit, airflow path shown.
Perforated work surface/inet grill (Stainless steel option shown).
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TPE
Specifications
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 |
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 |
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