Industrial Fume Hoods.
Aerodynamic shields designed by CFD to ASHRAE 110, with no turbulence at all.
Not simple extraction boxes, but aerodynamic shields designed by CFD.
Extracting aggressive vapour is a parameter on which neither cleanroom integrity nor personnel safety can compromise. The fume hoods we build are not simple extraction boxes but aerodynamic shields free of turbulence, designed by computational fluid dynamics to ASHRAE 110.
Polypropylene (PP) Fume Hoods Metal-free fortresses against heavy corrosive vapour
These metal-free laboratory fortresses give complete protection against heavy corrosive vapours that would quickly destroy a conventional epoxy or steel hood — aqua regia and hydrofluoric acid among them — and guarantee the operator's safety. During acid digestions and sample preparation, powerful air curtains carry the gas away.
- Cabinet Architecture
- A thick, double-walled PP construction of advanced chemical resistance.
- Aerodynamic Design
- Airfoil profiles that eliminate turbulence at the sash opening, and adjustable rear baffles.
- Critical Applications
- Silicon chip etching trials in semiconductor laboratories, and heavy metal acid digestion analysis in metallurgical research facilities.
The plenum behind the rear baffle is built with a fall, so condensing acid never stands on a horizontal surface but runs straight into the PP drainage channel.
The PP airfoil at the front lower edge of the worktop makes the incoming air flow smoothly and parallel to the work surface, preventing the reverse eddies that would otherwise form at the operator's chest.
The LED fittings sit in the cabinet roof inside chemically isolated, gas-tight polymer housings, and all servicing is done from outside.
Laminar Flow (LAF) Cabinets Zones of microbiological purity to ISO class 4/5
Rather than drawing room air away, these zones of microbiological and chemical purity direct ultra-clean air — ISO class 4/5, purified through HEPA/ULPA filters — over the product and isolate it completely from particles. Critical samples and packaging are kept absolutely free of dust.
- Filtration Dynamics
- H14 HEPA or U15 ULPA filter blocks to the ISO classification.
- Flow Control
- Energy-efficient EC fan motors and 316L stainless or PP diffuser panels for an even air distribution.
- Critical Applications
- Precision assembly of space optics, and sterile medical device packaging lines.
Differential manometers before and after the filter read the pressure drop continuously. When the defined limit is passed the system alarms automatically to warn that the 0.45 m/s air velocity is at risk.
Vertical flow is ideal where clean air must sweep the product from every side and the operator also has to be protected, since vapours are pushed downwards and away. Horizontal flow is purely product-focused and is preferred for large, wide assemblies.
No. The EC fan technology and the built-in velocity sensors raise the speed automatically as the filter loads and the resistance rises, holding the target 0.45 m/s.
Down-Draft PP Benches Ergonomic stations that capture at source
Open, ergonomic workstations at which vapour and odour are never allowed to rise: they are captured where they are released and drawn downwards. Toxic gases heavier than air and dense solvent vapour are absorbed directly through the perforations in the work surface.
- Surface Design
- A thick perforated PP worktop whose hole pattern is calculated on fluid dynamics.
- Exhaust and Liquid Management
- A drain pan under the top to catch spills, and acoustically insulated exhaust plenums below.
- Critical Applications
- Extracting formaldehyde vapour in pathology laboratories, and solvent cleaning of engine components in aviation maintenance.
A sloped secondary spill tray sits directly beneath the perforated top. Spilt chemical drains into it without disturbing the airflow and is removed through a safe drain valve.
The exhaust plenum beneath the bench is given a tapering cross-section by CFD analysis. That geometry produces exactly the same negative pressure at the centre of the surface as at its corners.
No. For gases that rise quickly, such as hydrogen or helium, a conventional up-draft hood should be used. Down-draft systems are optimised for dense, heavy vapours and odours.
Fume Hood Filters & Scrubber Systems Exhaust neutralisation modules aiming at zero emission
Neutralising the industrial exhaust chemically before it reaches the atmosphere, these modules sit at the centre of environmental sustainability and zero-emission targets. They wash and neutralise acid vapour, and clean the exhaust by trapping VOCs on activated carbon.
- Contact and Washing
- Large-surface PP packing (Pall rings) and counter-current spray nozzles.
- Air Cleaning
- Demister pads and highly absorbent activated carbon beds for VOC adsorption.
- Critical Applications
- Washing the chlorine- and fluorine-based gases released in semiconductor plants before discharge, and neutralising the exhaust of fuel research laboratories.
The dirty gas is drawn upwards while the neutralising liquid, usually an alkaline solution, is sprayed downwards through dedicated nozzles. The large-surface PP packing between them extends the contact time and gives a reaction of around 99 % efficiency.
Polymer demister grids, through which the washed air passes before reaching the fan, hold the fine droplets and return them to the wash chamber.
A photoionisation detector (PID) or dedicated VOC sensors at the filter outlet send a breakthrough warning to the HMI the moment they detect escaping gas in the exhaust.