Techniques for thermally insulating a liquid chromatographic column

A method performed by a processor of an apparatus for performing liquid chromatography with a liquid chromatography column having an inlet and an outlet, comprising:

• determining a predicted steady state mobile phase temperature at the outlet based in part on column inlet temperature;
• setting a set point temperature for the column heater a column heater positioned at or near the outlet of the liquid chromatography column the precited steady state mobile phase temperature to keep a difference between column inlet temperature and column outlet temperature substantially constant;
• receiving temperature readings from sensors positioned on the apparatus;
• based on the received temperature readings, updating a setting that determines how much heat is delivered by the column heater;
• and
• forwarding control signals indicative of the updated setting to the column heater.

A method performed by an apparatus for liquid chromatography, comprising:

• heating a mobile phase with a mobile phase heater to produce a heated mobile phase;
• injecting the heated mobile phase into an inlet of the liquid chromatography column so that the mobile phase passes through the liquid chromatography column from an outlet to an inlet;
• determining with a processor a predicted steady state mobile phase temperature at the outlet based in part on column inlet temperature;
• setting a set point temperature with the processor for a column heater positioned at or near the outlet at the predicted steady state mobile phase temperature to keep a difference between column inlet temperature and column outlet temperature substantially constant;
• responsive to the setting of the set point temperature, heating the column with the column heater to keep a difference between a the column inlet temperature and the column outlet substantially constant.