Restek offers fused silica guard columns and transfer lines ranging from 0.025mm ID to 0.53mm ID, from 1 to 10 meters long. Fused silica guard columns are available with intermediate polarity or polar deactivation, and with several specialty deactivations, including base deactivation, Hydroguard deactivation, and Siltek treatment. Passivated stainless steel (MXT) guard columns are also available in 0.28mm ID or 0.53mm ID, with intermediate polarity or Hydroguard deactivation for our MXT columns.

