Laminar Flow Fume Hood
Series »ASW-UD«

Laminar Flow Fume Hood Series »ASW-UD«


Safety equipment with laminar flow clean air current to protect your product from air-borne contamination arising from the surroundings and the working procedure. Harmful aerosols and solvent vapours or aromatics with intensive odours generated in the cabinet are effectively removed by adsorption to protect personnel and surroundings.
The air quality complies with:

  • ISO 14644-1 Cl. 5
  • the US Federal Standard 209e, Cl. 100
  • GMP recommendations are fulfilled.
  • Protection of personnel during work with highly hazardous substances is assured.

Video - Flow simulation:

Operation Principle

Laminar flow is a smooth unidirectional current of ultra clean filtered air flowing at a constant velocity. This air flows vertically through the whole CLEAN working area and carries all air-borne contamination arising from the work to the air-intake slots at the back and front edges of the table. To protect personnel, air outside the cabinet is drawn into the front slot to form an air barrier which isolates the personnel from the working area and prevents the escape of dangerous substances. All the air is then drawn into the return air duct through a fine filter or filter with activated charcoal by the quietly running radial ventilator and then forced through the HEPA filter. A part of the circulating air is continually replaced by the incoming air and equals the amount of exhaust air. The cycle starts again.

  • Air coolers can be mounted on the air intake side.
  • Cartridges with activated charcoal can be installed to adsorb vapours!
  • This amount of exaust air must be taken into account in the total air volume exchange of the room ventilation system!


  • The pre filter has to be changed after 8-14 months of use.
  • The HEPA filter has to be changed after 7-10 years of use.

Quality Specification

Important for the proper function of the laminar flow equipment is the permanent and air-tight seating of the HEPA filter. We achieve this by means of an assembly system which is certified by the state authorities for use in nuclear plants.
Our laminar flow equipment complies with:

  • the Standard ISO 14644-1,
  • the GMP und PIC guidelines
  • and passes all FDA-inspections.

Air-tight seating of the HEPA filter is guaranteed.

Optional extras

  • Housing made of stainless steel 1.4404 (V4A)
  • Adaption to all kinds of power supplies and frequencies
  • Height of working area (H2) 1.150 mm possible
  • Working surface made of polypropylene possible.
  • Front panel made of Security glass possible.
  • Height of working surface (H3) 950 mm possible
  • Electrical sockets and laboratory taps according to your requirements
  • Also as table-top model
  • Finely adjustable ventilators, explosion-proof fabrication (EExe II T4)