Sample probe mounted condensers

An apparatus for cooling and condensing a fluid sample, the apparatus comprising:

• an elongated insert member having a condensing section in an upper portion, a reflux section in a lower portion, and a transition area between the condensing section and the reflux section,
• the condensing section including a plurality of angled helical fins defining a plurality of angled helical channels, the reflux section including a plurality of saddle fins, each of the saddle fins having an upper surface configured for self-draining of the fluid and a bottom surface, each of the saddle fins positioned to receive the sample from the plurality of angled helical fins, the condensing section and the reflux section operatively coupled along a central axis;
• and
• an elongated first shell having an inside bore and a plurality of multi-start helical fins formed on an exterior surface of the first shell, the plurality of multi-start helical fins defining a plurality of multi-start helical passages for a cooling medium to enter and flow in between the multi-start helical passages;
• wherein:
• the insert member is configured to be installed within the inside bore of the first shell so that the plurality of angled helical fins and the plurality of saddle fins make thermal contact with the inside bore to allow a heat transfer from the sample to the first shell.