Laminar Flow Module
Material Stainless steel 1.4404 (V4A)
Internally lined with noise-absorbing materials
Surface Smooth and unidirectionally brushed
Pre filter
Cl. G 4
EN 779
Synthetic-fiber matting
Cl. F 5
EN 779
Synthetic-fiber matting
Filter details Resistance of a spent filter 100 Pa
HEPA filter protective grid
Material Seawater-resistant aluminium (AlMg3)
Details Perforation with holes Ø 1,75 mm in staggered rows
Open screen area 48%, unperforated margins.
Surface Smooth, anodised and reflection-free
To protect the HEPA filter from accidental damage.
HEPA Filter
Cl. H 14
»High Efficiency Particulate Air«
EN 1822-1 (Cl.S DIN 24184)
Filter frame made of metal
Filter Glass-fiber matting with aluminium spacers
Filter details Initial resistance of a new filter 100 Pa
Resistance of a spent filter 420 Pa
Filter test By manufacturer. Test certificate is attatched.
Final test DOP-Test of the HEPA-filter after installation
Efficiency ≥ 99,999% of particles of Ø 0,3 µm
HEPA filter fastening
Material Stainless steel 1.4404 (V4A)
Construction Frame construction made of square pipes
Mounting Self-adjusting spring elements with plate springs
Mounting pressure 240 kPa (2,35 kg/cm²) on the filter gasket
Replacement of a spent HEPA filter is simple to perform.
Construction Direct-drive twin air-inlet radial ventilator
Mounting Fan and motor mounted in vibration-adsorbing rubber mountings
Vibration Motor and rotor are balanced according to performance class Q 2.5
The ventilator, motor and bearings are maintenance-free.
Motor overheat cut-off with re-start lock, smooth fan start and monitoring of the condition of the pre- and HEPA filters. Alarm signal by circuit breakage to the display panel.
Air velocity control (Thyristor control)
The laminar air flow velocity is monitored by means of the hot-wire method which allows a permanent automatic adjustment of the radial fan. The required air flow velocity is held constant with increasing filter clogging. The air flow sensor is situated in the clean area between the HEPA filter and the protective grid.
Bedienung / Anzeige
Switches 1 Power ON/OFF
2 Stand-by ON/OFF
3 Illumination ON/OFF
Pilot lamps

Pilot lamps

1 Failure red 2 Laminar Flow too high yellow
3 Laminar Flow optimal green 4 Laminar Flow too low yellow
5 Change pre-filter blue 6 Change HEPA filter blue
7 Stand-by yellow 8 Acoustic alarm
Arrangement Above the working area with the switching and control unit
Type Outside the working area, separated by the front panel
The working area is blend-free and optimally illuminated.
Material Stainless steel 1.4404 (V4A)
Surface Smooth and evenly ground
Construction Welded square pipes
Feet Large contact area and adjustable to compensate
for a difference of up to 30 mm.
Working area
Material Stainless steel 1.4404 (V4A)
Surface Smooth and unidirectionally brushed
Form Frame and working area are a single unit
Height of the working surface 750 mm.
The working area has an ergonomic design for comfortable use.
Viewing panel
Material Polycarbonate
Form Double hinged viewing panel with locking device
and different opening options:
Front opening
  • normal opening 215 mm
  • one panel open 450 mm
  • two panels open 762 mm
Working Surface
Material Stainless steel 1.4404 (V4A)
Surface Smooth and unidirectionally brushed
Form Edges folded
Quality Specification
Our laminar flow equipment complies with:
  • the VDI Guideline 2083, Cl. 3
  • the US Federal Standard 209e
  • the GMP und PIC guidelines
  • and passes all FDA-inspections.
5 years guarantee on the housing with use in humid surroundings
10 years guarantee for tight seating of the HEPA filter with an even clamping pressure of 240 kPa (2,35 kg/cm²).
Air-tight seating of the HEPA filter is guaranteed.
Trace analysis
Mobile Trace Measurement laboratory

Since 1977, this mobile trace measurement laboratory of the Research Center, Jülich has been under way in Europe. Laminar-Flow equipment Series FLORA I is integrated in the roof. An example of guaranteed filter seating tightness!
Adsorption with activated charcoal

Filter with activated charcoal are used for adsorbing volatile substances from the air.

Highly porous activated charcoal with an internal surface area of 500 - 1400 m²/g binds numerous gases and vapours principally by means of Van der Waal’s forces. The curve of adsorption as well as the adsorptive capacity of the charcoal can be obtained from the experimentally determined adsorption isotherms.

Most gases with a molecular weight of 30 and more are adsorbed by activated charcoal.

Adsorptions Isotherms

Adsorptions Isotherms

The activated charcoal we use adsorbs the following amount of compounds at a concentration of 1 g/m³ and a temperature of 20°C.

1 kg activated charcoal adsorbs maximally:
Acetone 100 g Benzol 250 g
Chlorbenzene 230 g Ethanol 85 g
Dichloromethane 120 g i-Propanol 100 g
Tuluene 280 g Trichloromethane 200 g
Xylene 420 g Hydrogen sulphide 40 g
Methylmercaptane 40 g Formaldehyde 100 g
Ether 60 g

These data are based on the adsorption of each substance singly to the activated charcoal.

end faq