This is a teardown of a Thermo Scientific Dionex TCC-3000SD Standard Thermostatted Column. Which has a temperature range from 5° to 80°C. It is used in liquid chromatography to supply 5° to 80°C ±0.5°C at a stability of ±0.1°C
It contains a chamber for passing tubes through, these are heated from a circulating air flow from two Peltier-elements.
If you like laboratory test and analysis equipment teardowns, you should check out the teardown of a Agilent Thermal Desorber from Gas chromatography.