In the past it was necessary to use Press-fit connectors with specific dimensions to connect columns of those dimensions. Modern Press-fit connectors are “laser-milled” to provide highly reproducible taper angles throughout the length of the Press-fit insuring an excellent seal. Now the only choice you have to make is between a Glass Union for standard applications, and Fused Silica Unions or Deactivated Quartz Unions for applications demanding maximum inertness.
The 2.5 mm Graphpak is not compatible with the Graphpak 2M used for the PTV. Order ferrules in addition to connector to fit your column. Ferrules must be ordered separately.
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