Scrubber Technology

Laboratory gas scrubbers

The laboratory gas scrubber is a compact system for extracting and washing out harmful, gaseous substances from discharge air.

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It is used in chemical laboratories during testing, in production, filling, draining, and cleaning of equipment and also whenever very small flows of discharge air have to be drawn off. The laboratory gas scrubber allows noxious substances to be absorbed, dusts to be separated, vapors to be condensed and hot gases to be saturated and cooled. In individual cases, the material and dimensions of the laboratory gas scrubber can be adapted to the operating requirements. Beside the standard PP/PE it is possible to design these units in electrically conductive plastics, stainless steel or fiberglass reinforced plastics.


The principle duty of the gas scrubber is to function as a jet scrubber which, in its capacity of ejector, extracts and conveys gases without an additional ventilator. The scrubbing liquid serves as motive medium sprayed by specially designed nozzles. as droplets which are used for pre-cleaning the gas

The mixture of gas and liquid droplets is separated in a centrifugal separator which is arranged downstream. The latter is designed in such a way that foam formation is kept at a minimum. The scrubbing liquid flows back into the supply tank where it is circulated by means of a magnetically coupled pump. The precleaned gas also flows through a counter flow scrubbing column which is arranged downstream which is provided either with the scrubbing liquid from the circulation pump or if necessary with make-up scrubbing liquid. Entrained liquid droplets are separated in a demister arranged downstream before the gas outlet. The solvent or reaction heat which is produced during the scrubbing process can be discharged either through fresh liquid with corresponding liquid overflow which is continually fed in, or through the additional installation of a liquid cooler.


  • Maintenance-free and easy to use
  • Easily transported
  • Corrosion resistant because of suitable material design
  • Auto-suction, no ventilator required
  • Easily modified and extended 
  • Wide load range, efficient partial load 
  • Resistant to fouling
  • High reliability

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