100% Employee Owned, Founded 1954

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Perma Pure

Cross Provider: Perma Pure

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Perma Pure manufactures high performance gas sample conditioning systems using the unique substance Nafion™.  Nafion™ is a flourocarbon copolymer of Teflon® and sulfonic acid.  The Teflon® makes the Nafion™ resistant to almost every chemical and the sulfonic acid has a very high water-of-hydration.  This means that gas dryers made with Nafion™ remove the water vapor from a sample very quickly, but many chemicals and compounds are retained in the sample. Examples of these compounds that are retained include:

  • Atmospheric gases
  • Halogens
  • Hydrocarbons
  • Inorganic acids
  • Oxides
  • Sulfur
  • Toxic gases

High Quality Gas Sample Dryers

Perma Pure’s gas sample dryers which include Nafion™ are successful because they are:

  • Rugged and corrosion resistant
  • Continuous and self-regenerating
  • Reliable and long lasting
  • Maintenance free
  • Provide predictable performance

Latest Perma Pure Resources, News and Events

Perma Pure Resource Take a look at the latest product overview from Perma-Pure. Our process solutions group offers Perma-Pure dryers and humidifiers featuring Nafion technology. Very Selective Permeation No Routine Maintenance Rapid Moisture Exchange Corrosion Resistant Continuous Performance No Moving Parts Our process solutions group can help your team determine…


Are you interested in learning more about working with Cross to implement a Perma Pure gas sample conditioning solution into your process? Contact one of our experts to start a conversation!