A spectroscopic sample analysis apparatus includes an actively controlled
heat exchanger in serial fluid communication with a spectroscopic
analyzer, and a controller communicably coupled to the heat exchanger.
The heat exchanger is disposed downstream of a fluid handler in the form
of a stream selection unit (SSU), a solvent/standard recirculation unit
(SRU), and/or an auto-sampling unit (ASU). The SSU selectively couples
individual stream inputs to an output port. The SRU includes a
solvent/standard reservoir, and selectively couples output ports to the
heat exchanger, and returns the solvent/standard sample to the
reservoirs. The ASU includes a sample reservoir having a sample transfer
pathway with a plurality of orifices disposed at spaced locations along a
length thereof. The controller selectively actuates the fluid handler,
enabling sample to flow therethrough to the heat exchanger, and actuates
the heat exchanger to maintain the sample at a predetermined temperature.