Integrated device

MAS‑100 CG Ex®

Compressed gases

The MAS‑100 CG Ex® has been specially developed for monitoring and measuring the microbiological contamination of compressed gases. The sampling method is based on the tried-and-tested Andersen impaction principle and accommodates the use of standard 90 to 100 mm Petri dishes. The compressed gases most commonly used in the industry are pre-programmed in the explosion-proof device. The MAS‑100 CG Ex® collects microorganisms under pressure and only initiates automatic decompression after the collection cycle, thus preventing a sudden drop in pressure from damaging the germs. The device is mobile, easy to use and powered via an integrated rechargeable battery.

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  • Air sampler optimised to ensure minimal reduction of viability
  • Key gases pre-programmed: air pressure, N2, CO2, Ar, O2
  • Up to ten gas types can be saved
  • Integrated pressure and mass flow control
  • Explosion-proof
  • Operation with 90 to 100 mm Petri dishes


  • Airflow 100/50 standard litres per minute
  • Application range 1.5 to 10 bar (absolute)
  • Rechargeable battery pack, autonomy approx. 3.5 hours
  • Housing made from powder-coated aluminium
  • Sampling head can be sterilised
  • Explosion-proof in accordance with EU Directive 2014/34/EU (ATEX)
  • Length 49 cm, width 32 cm, height 11 cm, weight approx. 12.5 kg (with sampling head)


  • Five pre-programmed volumes, individually adjustable between 1 and 2,000 litres
  • Dialogue-based menu operation
  • Real-time clock with date and calibration reminder