Sorbent Retainers


Cryosorb® Sorbent Retainers are widely used in the insulating annuals of many cryogenic storage vessels manufactured today. Cryosorb® retainers have a very high affinity for trace atmospheric gases such as nitrogen, oxygen and carbon dioxide at cryogenic temperatures.

Cryosorb® Sorbent Retainers will pump vacuum insulating areas in cryogenic storage vessels down to less than 1/10 of a micron, absolute pressure, after taking over when the mechanical evacuation equipment is sealed off, and the retainer is pierced.

  • Insulating cryogenic storage vessels

Cryosorb® Sorbent Retainers have excellent heat transfer properties. They will maintain the activity of the adsorptive material until the insulating annulus is sealed off. In some cases, this eliminates the necessity for reactivating the adsorptive material by heating the Bessel and evacuating. Other benefits include:

  • Adsorbs atmospheric gases to absolute pressure
  • Excellent heat transfer properties
  • High affinity for nitrogen, oxygen and carbon dioxide


Multisorb Technologies practices a policy of continuous improvement, therefore we reserve the right to discontinue or change specifications, designs or materials, without notice, consistent with sound engineering principles and modern practices.