Horizontal Laminar Flow Bench
Series »ASW-QR«

Horizontal Laminar Flow Bench Series »ASW-QR«


Laminar flow clean air current to protect your product from the harmful effects of air-borne contamination from the surroundings and from contamination liberated during the working procedure.
The air quality complies with:

  • ISO 14644-1 Cl. 5
  • the US Federal Standard 209e, Cl. 100
  • GMP recommendations are fulfilled.

Operation Principle

Laminar flow is a smooth unidirectional current of ultra clean filtered air flowing at a constant velocity. This air flows horizontally through the whole CLEAN working area and carries away all contamination from the worker or the process. In order to increase product protection a certain amount of air is drawn in at the front edge of the working surface and forms an air barrier between the CLEAN area and the surroundings. This air is drawn under the working surface into the return-air ducts. Air-borne particles which are carried by turbulences in the surrounding air are prevented from penetrating the clean area by the air barrier. Room air is drawn into the equipment through a pre-filter and pressed by the quietly running radial ventilator through the HEPA filter (High Efficiency Particulate Air-Filter). The cycle starts again.

  • This equipment does not interfere with the laboratory air conditioning.


  • 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
  • Electrical sockets and laboratory taps according to your requirements
  • Also as table-top model
  • explosion-proof fabrication (EExe II T4)
    see ASW-UD