Abstract: LRRS has been shown to have the potential to make Raman spectroscopy as practical and as widely used as IR spectroscopy. The advantages LRRS brings to Raman spectrometry are its order of magnitude lower price, size, and weight from that of laboratory grade Raman spectrometers. These allow the implementation of the Raman approach with all of its advantages in a small, lightweight, portable, and affordable instrument. The disadvantages of LRRS is a small degradation in performance from that of laboratory grade Raman spectrometers. It is shown in this paper that for one class of applications, measuring the concentrations of analytes in a solvent, the degradation in performance is insignificant. This class of application includes monitoring monomers and polymer concentrations during polymerization and the chemical constituents during crystallization processes. !3
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