Perma Pure MD-700 Series Gas Dryers


Dry gas samples for most OEM and laboratory applications. 


Perma Pure MD™ Series gas sample dryers (Monotube Dryer) use a single Nafion™ tubing selectively permeable membrane to continuously dry gas streams removing only water vapor. 

These dryers operate over a wide range of temperatures, pressures and flow rates, and dry to dew points as low as -60°C.

Recommended Sample Gas Flow Rates:

  • 0-0.2 lpm: MD-050 Series
  • 0.1-2 lpm: MD-070 Series
  • 1-4 lpm: MD-110 Series


  • Flow rates up to 4 l/m
  • Operating temperatures to max. 120° C
  • Operating pressures to 100 psi (absolute)
  • Straight or coiled configuration
  • Corrosion resistant
  • Standard dew points to – 25° C, with – 60° C possible in special cases (contact factory)
  • No loss of analytes
  • No moving parts

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