The UNITY connects to all types of GC as the electronically controlled version is administered from independent software.
Unity connects to the GC pneumatics for easy control of the linear gas rate on the column.
UNITY does not use an injector for connection because of the excellent focusing characteristics of the built-in cold trap, even for the smallest molecules.
Total flexibility
The UNITY-xr may either be used as the base unit for all the Markes possibilities, or built into the more dedicated, but also somewhat more analytically limited TD-100-xr, which is the autosampler-thermal desorber built into one instrument.
If you deal with humid samples, the Unity-xr has two different drying possibilities, Nafion for non-polar samples, and Kori for polar components.