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Drastically Improve Your GC Performance Today



Designed Specifically to Increase The Purity Level of the Helium Carrier Gas



When the Purifier Requires Regeneration, We Got Your Back


  • CryoTrap A 1920x800

options available

  • Activated Carbon or Molecular Sieve bed material
  • Connections for the inlet and outlet of the helium carrier gas and for media replacement
  • The unit is made to rest in the mouth opening of a liquid nitrogen dewar container. A 30 liter liquid nitrogen dewar is optional.

CryoTrap A 600x700

Exchange Program:
When the purifier requires regeneration, we offer a Cryo Trap Exchange Program in where we will ship you a replacement unit and the used unit is shipped back to us for proper regeneration. Contact us for more details.

Cryo Trap Helium Gas Purifier

For Industrial, Medical and Specialty Gas Applications

Our Cryo Traps purify the helium carrier gas being supplied to a Gas Chromatograph (GC) significantly improving the GC performance especially for PPM or PPB analysis. The Cryo Trap Purifier uses an activated carbon or molecular sieve bed immersed in a liquid nitrogen bath.  It will remove impurities by freezing and plating out contaminants on the bed material. The helium will not freeze out and continue to flow to the gas chromatograph providing better analysis.


Features and Benefits

  • The gas purifier uses low temperature deposition of impurities in Helium to trap out gases such as Nitrogen, Argon, and CO2 as well as trap out moisture and hydrocarbons

  • This is a simple, low cost, highly effective way to increase the purity level of the helium carrier gas

  • Will purify helium to a very low PPB level of contaminants providing a good background gas as close to zero as possible for better analysis results 

  • The purifier bed material can be regenerated to allow years of use without media replacement 

  • Each unit is shipped fully assembled and pre-tested.

  • Made in the USA


have a special application?

For any questions on what is offered or if you have a specialty application, please feel free to contact us at (630) 806-2000 or email us at solutions@weldcoa.com.



Deep Industry Experience

From the most basic to the most demanding, we have the products, experience and staff that will support you and your customer’s needs better than anyone in the specialty gas industry.



Weldcoa is a true USA Manufacturer

We are proud to say all of our specialty gas equipment is engineered, designed, programmed, fabricated, wired, assembled and thoroughly tested at our Aurora, Illinois USA facility. 



Top Quality Products and Staff

Weldcoa continually strives to exceed their customers’ expectations. With our vast amount of experience involved with the litany of documentation required, as well as our unmatched depth of knowledge and technical expertise, it will become quite clear that Weldcoa is the partner you are looking for.